How to use water level floors. Hydro level - principle of operation and rules of use

In the course of construction work, there is often a need for the simplest device, with the help of which it would be possible to quite simply and accurately produce horizontal marking of a particular structure. It turns out that you can get a fairly even marking (with a minimum deviation from the horizontal) using the simplest tool - a water level, sometimes also called a hydro level. In this article we will consider the question of what this is made of measuring tool do it yourself and how to use it in your daily work.

Outwardly, this simple instrument, also called a "spirit level", is a hollow transparent hose of a certain length and a diameter of about 1-1.5 cm, at both ends of which control divisions are sometimes applied.

First of all, we note that such a spirit level is sold today in any store of building tools and is quite inexpensive (about 150-200 rubles). But if time is running out and you have everything you need at hand, it is faster and more convenient to do it yourself. To make a level, you only need a piece of a hollow transparent hose of the appropriate length and a suitable coloring material (marker, felt-tip pen, etc.), with which you can apply control marks or lines on the hose itself and on the objects to be marked.

As you fill the hose with water, be sure to get rid of the bubbles that form during the filling process (using a syringe, for example), after which you can start marking the levels you need.

The operation of your device is based on the well-known principle of interaction of two communicating vessels. In accordance with it, when the water levels in two interconnected parts of the vessel coincide, the marks counted on the scales have the same distance in height from the point taken as the initial level. Due to this coincidence, it is possible to obtain points on the surface to be marked that are equally spaced in height from the conditional geographic mark, taken as zero.

After making the water level, you will be able to get the same elevation marks approximately as follows (as an example, we will consider the case of setting the location of the sex lags):

1. First of all, on one side of the working wall, we apply the starting point of the marking at a height of about 1 meter. At this level, you will need to outline a clear horizontal line.
2. Then we apply one of the ends of our tool to the previously made mark and fix it there with adhesive tape (or resort to the help of another person).
3. We transfer the other end of the spirit level to the other side of this wall and apply the final section of the tube to a place approximately corresponding to a height of 1 meter. Adjust the height of this end of the hose so that the water level at the opposite end coincides with the previously drawn horizontal line.
4. The water level mark obtained at this end of the device will give us the desired height. In the same way, you can set all intermediate marking points, which are then connected by one solid line.

Upon completion of these operations, you will only have to measure down from the resulting marking line required amount centimeters and mark the location of the sex lags around the entire perimeter of the room.

Advantages

The undoubted advantages of a homemade water level include the following advantages:

• low cost;
• ease of manufacture;
• ease of handling the device;
• good discernibility of the instrument readings in any illumination.

Video

This video shows how to work with a water level.

A hydro level is a construction tool used to determine the level of a surface located at a certain distance. Outwardly, the device resembles a flexible tube with a scale. Before using the water level, it is recommended that you familiarize yourself with the principle of its operation. It is based on Pascal's law of communicating vessels. The level is determined relative to the position of the horizon.

The work of the hydro level is based on Pascal's law of communicating vessels.

Description and characteristics of the tool

The water device consists of a hose and two reservoirs. It is used for installation false ceiling pouring the screed. It helps to align items located in various rooms.

To simplify the work with the hydraulic level, it is recommended to use pipes with a large diameter. They provide an easy passage for water. The optimal tube length is 3-30 m. A water instrument weighs up to 1 kilogram. Not only specialists, but also novice builders will be able to work with the water level.

To check the accuracy of the device, the liquid is measured in two containers. To mark a given height on an object, one tank is held at a certain point, and the other moves in space.

In this video, you will learn how to work with a hydro level:

On large buildings they use laser level with a beam 100 meters long. A bubble level is used to determine deviations in any plane. It is presented in the form of a straight body 15-200 cm in length with flasks and liquid. Given the position of the bubble, the angle of inclination of the device relative to the surface is determined.

A similar operating principle is typical for the pipe level. It is convenient to use as it has a special mount. An electronic hydraulic level is used to convert the slope and angular velocity into an electrical signal.

Pros and cons of the device

Flexible hose provides easy work in hard-to-reach places. The water level can be used from various corners of the building, where there is no line of sight to the object. It is difficult for one person to use the water level. Experts refer to other disadvantages of the device:

• long hoses are difficult to fill with water;
• systematic water change;
• 2 people must work with the instrument, the exception is the laser type of the device;
• the level requires 2 meters isolation from hot and heating devices;
• work is carried out only in the horizontal plane.

To use the hydro level, you will need a container, a marker, a tape measure, an adhesive tape, and a dye for water. The instrument is preliminarily washed with soapy water. In this case, dirt will not affect the accuracy of its operation. Experts identify 2 ways to use the water level correctly.

The hydraulic level works only on the horizontal plane

First method:

• the hose is straightened so that there are no kinks;
• water is collected in the container;
• the vessel is installed on a hill;
• one end of the tool is placed on the bottom of the container;
• the fluid is pulled up through another hole in the hose.

You can use the hydro level, following a different technique: the end with the flask is lowered to the ground, inserting a funnel into the hole at the other end. Liquid is poured into the tool. In a similar way, the device is filled with tap water. But in this case, air bubbles penetrate into the vessel, which makes it difficult to regulate the fluid flow. Since in boiled water less oxygen, experts pour it into the vessel.

To paint the liquid you will need:

1. Attach containers to each other.
2. Provides an equal level of liquid in the vessels.
3. The found value is indicated by a latch, which is called the zero level.
4. When the apparatus is filled with water, the flasks are fixed, the taps on them are closed.

The principle of operation of the hydro level

The construction water level has complex structure, it will take two people to work with it. The first bulb is held at a certain level near the first object. The pencil marks the surface. The indicator is fixed by a device that is left stationary.

The second person moves the other bulb to the next point. In this case, the tube should not bend. The water level is adjusted to the desired mark. If the levels are aligned, the measured areas are in a horizontal position relative to each other.

Two people are required to carry out measurements using the hydro level

Mark with a pencil. The found points are considered to be control points. They are connected in a straight line. Draw perpendicular straight lines to the desired amount using a ruler with tape measure. Labels connect. If the tool is used by one person, the attachment to any bulb is preliminarily performed. Then this part of the level is fixed to the desired place with screws or tape.

The Bison model is referred to the construction hydraulic levels. It is used to make markings. The device is presented in the form of a polymer tube, the length of which is within 5-25 meters, and 2 flasks.

The shape of the vessels allows them to be applied to walls and other surfaces. The length of the hose is 8 mm. The Stayer model is equipped with a tube 5-25 meters long and 6 mm in diameter.

Self-production

To make a device from scrap materials, you will need a tube with a diameter of 8-10 mm. In addition, syringes are required. The length of the hose depends on the area of ​​the room. Step by step assembly hydro level:

• passing a soap solution through the hose, which allows you to get rid of the remnants of the production oil;
• trimming pistons from syringes with a knife;
• expansion of the syringe holes to the diameter of the hose;
• inserting the needle into the appropriate tubes.

Another way of assembling the tool is to use a transparent hose and discard the flasks. At the ends of the hose, a centimeter marking is made with a marker. In order for the device to work correctly, air is released from the hose. The system is filled with water. The ends of the hose are lifted up. The tube is pressed with the foot in the place where the bubbles have risen.

The marks are connected with a thread. Previously, it is rubbed with chalk or slate. It is pulled in the center by 1 centimeter, and then released. The thread should leave an even and straight mark. Experts advise pouring clean water into the hydro level, which contains a small amount of bubbles. If the system is used at subzero temperatures, an anti-freeze is used. At the end of the work, the liquid is drained.

To keep it in its original state, alcohol and vodka are added to the liquid. To check the accuracy of the tool, connect the ends of the hose. The liquid level in the vessels must match. In other cases, experts believe that the hose is bent and contains air.

To make marks accurately, use a pencil sharpened well. When performing work, bends must be avoided. It is recommended to carry the device open to prevent rupture. Store the hose away from the sun.

The creation of a quality structure depends not only on the material used, the clear and consistent performance of installation work.

The most important role in the construction of any objects and finishing work is played by the ability to create or mount every detail of the structure with high quality and accuracy.

To simplify the implementation of such work, various devices, one of which is the water level. Many owners often ask the question of how to use the hydro level, which we can answer in the future.

What is a hydro level and what is it for?

Hydro level will help to establish deviation from horizontal and vertical

When creating any building or performing construction interior finishing work, it is necessary that the foundation, floor, walls, ceilings, door and window openings are located in the same horizontal and vertical planes.

For this, levels are used - devices that are able to show the deviation from the horizontal and vertical.

Today there are 3 types of levels that are widely used in the organization of construction work, these are:

• drip level;
• hydro level;
• laser level.

Each of the devices has its own scope and features.

The laser level is battery operated

The laser level is a modern measuring device that is conveniently used by builders in any room and outdoors.

This appliance is an electronic product powered by battery, and has a fairly high price. Not every home owner and even a builder can afford to purchase it.

The usual drip level is an indispensable device in the application of construction work, but it loses its effectiveness when it is necessary to take measurements on structures that are more than 2 m apart from each other.

This device is inexpensive and gives reasonably accurate readings.

The water level is a fairly simple instrument that has a low price and is capable of producing fairly accurate readings. Many professionals rightly believe that this device is indispensable for private construction work.

The scope of application of the water-type level is quite diverse. With the help of the hydro level, it is possible to expose the pile and strip foundations, to determine the height difference. The device is widely used in repair work and the organization of flooring (rough and finish).

You should be aware that by organizing construction work on an inclined section, using the hydro level, you can easily and accurately determine the height difference from one end of the section to the other.

This will be of great importance in the organization of sewerage and water supply systems, as well as wastewater treatment.

Hydro level - what is it like

The principle of operation of a water level is quite simple, it is based on the physical law "on communicating vessels", which says that if 2 vessels are connected with each other by a hose or other binding material through which a liquid can move, and filled with water or other fluid material, the level liquid will always be comparable. This means that, being on the same plane, 2 vessels will show 1 level of water, but if 1 vessel is raised, then the level of fluid in it will decrease, respectively, in 2 containers it will increase.

In principle, 2 vessels are 2 flasks of a hydro level, into which liquid is poured, and they are also connected to each other by a transparent plastic tube. A graduated scale is applied to each of the flasks, which allows you to determine how many millimeters of 2 compared objects have differences along the horizontal plane.

The length of the device hose can be chosen by each owner independently upon purchase, since it depends on the scope of the device (at what distances the objects will be measured).

It is more convenient to take measurements together

If the hydraulic level will be used for internal work, then a pipe length of up to 8 m is sufficient, even if the length of the floor covering or ceiling beams exceed this distance, always expose additional benchmarks (beacons), which are auxiliary element for high-quality marking.

For outdoor construction work related to the construction of buildings, it is advisable to choose long hoses 10-20 m long, so that it is possible to take measurements along the diagonals of the foundation or the house as a whole.

You can see a vivid example of using a do-it-yourself water level in the diagram.

It should be remembered that when choosing the water level tube from the measuring point, it must go down vertically and in the same way move to another point. Moreover, the hose along its entire length should not have tensions and unnecessary loops during measurements.

Preparation of the hydro level for work

In order for the readings to be better seen, pour a colored liquid into the vessel

Before using the hydro level, it is necessary to collect liquid into it. Most often, it is water, only for the clarity of measurements it is tinted.

It would seem that the water level is a rather simple device, but with some shortcomings made at the time of preparing the device for operation, all measurements in the future may have a large error.

An example of such a case is air bubbles in plastic pipe... To prevent their appearance, water (previously tinted) should be taken from a container located at a height (by lowering the level tube there). Accordingly, the 2 bulb should be as close to the surface of the earth as possible.

As soon as you notice that there is enough water in the plastic tube, you should remove one end from the container located at a height and pinch it with your fingers so that air does not get there. Only then can the flask be connected.

To check the correctness, the readings of the device 2 flasks must be compared together at the same level, they must show the same value on the scale. If the whole procedure is carried out successfully, then further operation of the water level should be problem-free.

It should be remembered that almost every purchased hydraulic level is equipped with flasks to which the ends of a plastic tube are attached. The flasks should be marked with a graduated scale.

However, many builders strongly recommend buying water levels with mounting clips or rubber bands. For the secrets of working with the device, see this video:

Having learned how to properly use the hydro level and prepare it for operation, you can safely proceed to various construction works... The water level will serve you as a reliable assistant in all your endeavors and will never let you down, as it is quite simple and reliable measuring device.

One of the earliest measuring instruments used by builders and bricklayers is the water level. This is the simplest and most primitive device designed to detect the level of a horizontal surface located at an appropriate distance. Although this meter has a simple design that works on the principle of balancing, it is often difficult for beginners to use it. The material describes how to use the hydro level different ways, as well as the principle of operation and features self-made tool.

Description of the construction hydraulic level and its purpose

Outwardly, this device consists of two containers in the form of flasks, as well as a hose connecting these reservoirs. main feature the device is that the flasks, as well as the hose, have transparent walls, which is necessary to control the liquid. A measuring tool is used when installing a suspended ceiling, when installing pillars and pouring a screed with a foundation. With its help, the alignment of objects that are located on two parallel or perpendicular bases is carried out.

The hose used is PVC or silicone, and the plastic flasks have a graduated scale. Accurate measurements are carried out on this scale. It is important to say that the scale on the flask is optional, since it can be replaced by a mark made with a marker. Why do you need a scale and a marker on the flasks of the device, you will learn when studying the section how to use the hydro level.

Due to the fact that the tool has the simplest design, it costs no more than 500 rubles. Moreover, the price depends on two main factors - the length of the hose and its diameter. The greater the length and diameter, the correspondingly higher the price of the hydro level. Modern manufacturers produce devices with a hose length of 3 to 30 meters. This primitive device is being replaced today by a laser level, which costs many times more.

What are the advantages and disadvantages of the device

A relative of the hydro level is, which is designed to detect deviations in any plane. The hydraulic level is also called a pipe level, which is easy to use, and most importantly, it allows you to align items placed on two parallel and perpendicular surfaces with sufficient accuracy.

Before figuring out the principle of operation of the device, as well as the features of its use, let's figure out the advantages and disadvantages. The disadvantages of the meter include the following factors:

• Difficult to use by one person - one of the main big disadvantages of the tool, which is solved by using tape or fastening materials
• Difficulty filling a long hose with water
• After using the device, the water must be drained, and refilled when reused.
• The meter must not be used near heating appliances that could affect the integrity of the connecting hose
• The tool is designed exclusively for measuring the horizontal plane.

The large number of disadvantages does not mean at all that this measuring tool is unusable. Before drawing conclusions, let's consider its advantages:

1. Work can be carried out in the most inaccessible places
2. The price of the device is so low that buying a tool is not difficult.
3. The tool, in the absence of the possibility of purchase, can be made from improvised means
4. High accuracy of the results obtained
5. The possibility of its use not only for leveling the ceiling, screed, pillars, etc., but also for monitoring the work performed

It follows from this that the device is suitable for use by everyone who does not have the opportunity to purchase a laser level. If the work on pouring the foundation or installing the pillars is carried out in a one-time amount, then it simply does not make sense to purchase expensive laser equipment.

On the principle of operation of the device and where it is used

As already mentioned, the principle of operation of the device is based on the effect of balancing the liquid. Many people believe that it is impossible to make measurements with a device without tanks, but in fact, the main component of the hydro level is a connecting polymer tube. Measurements can be made with one tube, but this requires calibrating it.

The most effective are hydro levels, which use a polymer tube. large diameter... In such a hose, less air bubbles are created, which must be removed, and the likelihood of bending or kinking is eliminated.

The considered measuring device is used to implement the following tasks:

• When installing the ceiling in order to level it
• When building a foundation - allows you to determine the level of concrete pouring around the entire perimeter
• For leveling the floor, pouring liquid concrete does not guarantee that it will be even. To do this, you need to designate the labels by which to navigate when pouring concrete
• Installation of heating radiators in all rooms by level, as well as the location of shelves, paintings, etc.
• When aligning the posts - if a fence and other structures are being built, then the posts should be located at the same level. It is irrational and incorrect to level them with a tape measure relative to the ground, therefore, a hydro level is used
• When building a fence, it doesn't matter what the structure is built from - concrete, wood, metal, etc. In order for each section of the fence to be located at the same level, you will need to use a hydraulic level

When performing all of the above works, you can use either an optical level, but the hydro level is more accessible, and no less effective than modern counterparts.

How to use the hydro level - learning how to use it in different ways

The construction hydraulic level, like any other measuring tool, needs to be prepared before use. This preparation includes filling the instrument with liquid. The liquid being poured in the form of ordinary water is pre-painted in a bright color, which increases the measurement accuracy. Coloring water in bright colours is not a prerequisite, but this has a positive effect on the measurement accuracy.

When pouring water into the inside of the device, you must look so that air bubbles do not form in the hose. Their presence is unacceptable, as this will lead to inaccurate data. It is necessary to fill in water until the entire tube is filled with water, and at the same time there are no air bubbles. How to properly pour liquid into the device is shown in the diagram below.

After the device is filled with water, you can begin to calibrate it. Calibration is needed to get accurate results. The procedure consists in combining two flasks with each other, and adding water until they are aligned at the same value.

This value is the zero mark, but it is not at all necessary to fill the flasks with water until the liquid is aligned at zero. For this, any value that must be remembered is suitable. This is the whole process of hydraulic level calibration. When the device is ready for use, consider the first use case:

As you can see, using this device is not at all difficult. If both flasks are filled to a mark that does not correspond to zero, then measurements are carried out using a similar method. This is the second way how to use the hydro level:

1. We remember the value at which the value of the liquid in both tanks was balanced (for example, +3) during calibration
2. We bring the first tank to the surface, and align the flask with the previously set mark on the wall at the value that was fixed during calibration (i.e. +3)
3. One person holds the first tank, and the second moves to another object, and applies the flask to the wall, and achieves until the liquid in the flask reaches +3
4. After that, a mark is put on the wall.

The principle of measurement by the second method is completely similar to the first, with one small exception - it is necessary to remember the value of the liquid level during calibration. The accuracy of the results depends on this value.

It is interesting! If you are wondering how to use the hydro level for one person, then everything is quite simple here. To do this, you should use tape or a nail. With their help, the first flask is fixed after alignment with a pre-set mark on the wall. The fixed flask remains in place, and the master needs to move to another surface, where the second mark is applied.

How to make a hydro level with your own hands from improvised means

To make a hydro level from improvised means, you will need to use a transparent PVC tube, the diameter of which should not be less than 8-10 mm. If you strive to get a device that will be completely similar to the production one, you will also need two syringes. Further actions for the manufacture of a homemade hydro level are as follows:

1. Clean the hose with soapy water to remove any residual production oil. The soapy solution will also make the inner walls smooth, which has a positive effect on the elimination of air bubbles.
2. Extend the holes of the syringes to the outer diameter of the hose. Connect the syringes to the hose using sealant or
3. Remove the plungers from the syringes. The holes formed can be closed with tape after filling the tool with water.
4. Homemade hydro level ready to use

If you need to make the hydraulic level as quickly as possible, then you only need a transparent hose. The ends of the hose are marked with a marker during calibration. The tool is then ready for use. How to make a device with your own hands is shown in the video.

Although the hydro level is an interchangeable tool, it is still popular today. If you plan to use the meter when sub-zero temperatures, then you need to use an anti-freeze for cars or alcohol as a liquid. Antifreeze or antifreeze cannot be used, as these liquids are toxic. Also, the device must not be stored with the liquid filled in for a long time, and therefore, after use, the water should be drained. Store the measuring tool away from the sun. With this primitive gauge, you can always easily, quickly and correctly level the horizontal plane.

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Any of the users who are engaged in the construction of a house or renovation, sooner or later asks the question: what measuring tools does he need? Of course, a laser level greatly facilitates and speeds up work, for example, with internal finishing works... However, it is not devoid of such a drawback as insufficient brightness and range of the projected beam at sunlight... How to be in this case? Maybe you should buy an expensive model, which comes with a special receiver that allows the level to work over long distances? Do not rush to run to the store, often, many works can be successfully completed with the help of "old-fashioned" devices!

Malekate:

- I am building a house, so I wondered which measuring instrument is worth buying? I want to buy a laser plane builder, but is it worth the expense?

Practice shows that laser measuring instruments are not as simple as they seem at first glance. You need to know how to work with them. User of our forum with a nickname lobz believes that during construction, at the initial stage, you can get by with a high-quality bubble level, tape measure (long and short), a centerline and a water level.

After you have mastered the basics of working with these measuring tools and "get your hand", you can understand whether you need to buy something else. For example, a laser level.

Helen:

- My work is related to design surveys at large facilities. Therefore, I regularly use a laser tape measure, but I think that with ordinary construction you can completely do without it.

A laser tape measure speeds up the measurement of finished rooms. To measure the distance in an open area, the laser beam must be reflected from an obstacle.

- When building a house from a foam block, I used only a regular level, a tape measure and a hydro level. The result suits me perfectly.

Features of work with a water level

The hydro level works on the principle of communicating vessels. Despite the seeming simplicity of this measuring tool, you should understand the features of its operation.

Melomandk:

- I bought a hydro level in a store and faced such a problem as water flowing from under the caps of the flasks fixed at the ends of the spirit level. To set the level, you have to wait a long time. In addition, there is an error of 2-3 mm. How can you avoid this?

When buying a hydro level, you should pay attention to the quality of the hose and flasks. If the hydraulic level is slowly leveled or "lies", most likely, there are air bubbles in the hose. They must be deleted!

- The main problem of purchased water levels is a thin connecting hose.

How larger diameter tube, the faster the liquid level in the hydraulic level “settles down”.

The operation of the hydro level is significantly affected by the temperature of the water poured into it. For example, if the water is cold, then it moves very slowly along the hose, you have to wait a long time for the liquid levels to stabilize.

The same situation occurs when adding a liquid to the hydraulic level, which has a temperature different from the one that has already been filled. In this case, the density of water will differ by several percent, respectively, the level will begin to "lie".

Therefore, despite the large selection of hydro levels in hardware stores, some members of the forum prefer to make it on their own.

According to a user of our forum Victor Petrovich, The "correct" water level is made from a piece of oxygen hose and two glass pipes. " It is advisable to tint the water and pour it into the hose until the bubbles are completely released. And when carrying the water level, the ends of the tubes can be plugged with your finger so that water does not flow in.

You can also transfer the hydro level in the following way: break or pinch the tube below the flask at a distance of 20-30 cm. Store the filled hydro level by hanging it by both flasks on a clove.

Garvm:

- I have my own recipe for the "correct" hydro level. I buy a transparent silicone hose at a hobby store. I also buy two cranes there. Previously, when using opaque rubber hoses, I used risky glass tubing. The tubes were put directly on the ends of the hose. Now I'm taking risks right on the hose. Instead of scoring, a thin elastic band can be pulled over the tube, which moves back and forth. In the working position, both valves are open; during storage, they are closed.

The main criteria for choosing a hydro level: the tube must be sufficiently rigid, transparent, with a diameter of 8 to 10 mm.

Although the water level is usually filled with water, it is not suitable for work in winter - it freezes. How to be?

Victor Petrovich:

- When working in winter, I fill the hydro level with peppercorns.

It is also possible to fill the hydro level with automobile antifreeze or "anti-freeze". These liquids do not freeze in frost, have good fluidity and, due to their color, are clearly visible in a transparent tube.

Many novice developers have difficulty filling the hydro level - air bubbles remain. To avoid this, the hose is unwound and, raising one of its ends higher, water is poured into it. The remaining bubbles are expelled by clicking on the tube with water and driving them to the "exit". But there is also an old-fashioned way.

Melomandk:

- I dip one end of the hydro level into a jar of water, press the other with my lips and inhale sharply (this is how gasoline is usually drained). Water quickly fills the tube without bubbles.

It is believed that it is more convenient to work with the hydro level together, for example, like this:

1. We lean the tube of the hydraulic level against the reference mark.

2. Press the hole in the tube with your finger.

3. The partner with the second end of the hydraulic level stands in the right place.

4. Remove your finger from the tube and slowly move the tube, aligning the level with the line.

5. As soon as the risk and the level of the liquid are combined - we shout to the partner to put a mark on the wall.

But what if there is no partner, but you need to work with the hydro level? Make the markup yourself, using the advice of a forum user with a nickname Iosich.

The algorithm for such markup is as follows:

1. Mark an arbitrary control point that needs to be moved to another location.

2. We fix one end of the level hose (for example, with scotch tape) in the place where it is necessary to transfer the mark of the control point, obviously 20-30 cm higher than the control point.

We hold the other end of the tube in our hands, pinching the outlet with our finger.

3. Approach the second end of the level to the control point, apply the hose to the plane and move up and down to combine the water level with the line.

Then we fix the hose in this place with tape.

4. We come to the first end and make the second mark.

If necessary, the process is repeated for another point.

How to choose a bubble level?

In addition to the hydro level, a simple level becomes one of the most indispensable tools for marking work. Working with it is usually straightforward.

The main thing is to choose precision instrument! It seems to be easy to do. It is enough to take several levels different manufacturers, put them side by side on the table, and from 5-7 instruments showing approximately the same, choose the one that you like. Is it really?

Ssshaman:

- Regardless of how many levels are in the store, among all we choose only one - the exact one. If it is not there, then we turn around and leave.

The levels are necessarily checked individually, since they are used in the role of a conditional standard.

The level accuracy is very easy to check.

The vertical check is done like this:

1. Apply the level to the vertical surface and mark the position of the bubble.

2. Turn the level 180 degrees around its axis and apply it to the same surface. If the readings match, then the level can be taken.

This check is valid for levels with two or four working surfaces.

Ssshaman:

- To check the vertical at a level with one working surface, you need to find two parallel vertical surfaces, for example, two sides of a door. Accordingly, we apply a level first on one side of the door, then on the other. The reading should be symmetrical.

The horizontal level of the level is checked as follows:

1. Place the level on a horizontal surface and mark the position of the bubble.

2. Turn the level 180 degrees in a plane orthogonal to the level axis, the readings should be symmetrical.

Also, when checking for more accurate results, two pencils can be placed under the working plane of the level. In this case, only two points of support appear at the level. This eliminates the influence of random factors: surface irregularities, inaccurate level setting.

The accuracy of the check will increase if you check the level in the position when the bubble touches one of the marks.

The level check is performed every time before starting work, as well as after any accidental drop of the tool or if you suspect that the level has begun to "lie".

Builders know that a quality long tier from a renowned manufacturer is very expensive. However, members of the forum found a way out how to save money. We do this: we acquire an accurate, but short level and attach it with masking tape to a long rule.

- Because the rule is relatively inexpensive, the result is an excellent measuring tool 3 meters long. The accuracy of such a modernized level is quite enough for domestic needs.

Users can learn how to work with a laser level. Everything you would like to know about the hydro level is outlined. An educational program on a marking cord is available. And from you will learn how to choose a bubble level.