What is an optical level? This is a special device used by surveyors during the leveling process to identify the difference in heights of several points on the earth's surface. In other words, it allows you to measure the excess on the surface. This tool is useful for landscaping, construction, pipe laying, etc.
Recently, the choice of levels has been pleasing to the eye. Today we will look at the 8 best models , decide which one to choose and what to look for when buying.
Geobox n7-26
The first model under consideration is the geobox n7-26 level. When purchasing in a store, you will be provided with a special case and a set of adjustment tools (pin, screwdriver and plumb bob). The completely mechanical device is equipped with a compensator and is devoid of electronic parts. Additional features like the built-in bubble level and swivel base are nice.
The average cost of the device is from 9,000 to 10,000 rubles .
Geobox n7-26
For this money, the manufacturer offers you the following set of characteristics:
| Minimum focal length | 1m |
| Multiplicity | 26x |
| Minimum operating temperature | -30 C |
| Maximum operating temperature | +45 C |
- Availability of verification
- Convenient rubberized aiming and focusing screws
- Inconvenient minimum focus distance
The only calibrated level in its price category has passed ROSSTANDART certification. No comments needed: take it without hesitation
Accuracy
One of the main parameters of a level or rangefinder. Accuracy shows the degree of deviation of the instrument readings from the true value of the measured value. The higher this characteristic, the better. True, a more accurate device will cost more. The accuracy of most levels is plus minus 2-4 mm/10 m (0.2-0.4 mm/m), and the accuracy of rangefinders ranges from plus minus 1.5-3 mm/m.
For optical levels, the RMS (root mean square error) is indicated, on the basis of which one can judge the accuracy of these devices. In different models, this figure is equal to several millimeters per kilometer of double stroke:
- technical – up to 10 mm/km double stroke;
- precise – up to 3 mm/km double stroke;
- high-precision - up to 0.5 mm/km double stroke.
The choice of a level or rangefinder for accuracy is dictated by specific tasks. You should not chase a high parameter when performing indoor renovations. But for geodetic work you will need more precise tools.
Sokkia b40
For more complex work, the sokkia b40 level is suitable. The package includes a case and adjustment tools. The set of basic functions of the device is similar to the previous model: built-in bubble level, rotating base. In addition, sokkia b40 has high anti-moisture protection, which allows it to be used in all weather conditions. The minimum focal length of 20 cm is a huge plus when working in confined spaces.
The average price is from 15,000 to 20,000 rubles .
Sokkia b40
The characteristics of the level are as follows:
| Multiplicity | 24x |
| Minimum performance t | – 20 C |
| Maximum performance t | +50 C |
| Compensator | pendulum, with magnetic damper |
- Convenient for use in bad weather conditions
- Small minimum focus distance
- Availability of a verification certificate
- No
Excellent level! Wide viewing angle, smooth and nimble adjustment in a horizontal circle, a magnetic damper dampens nearby vibrations. The thread grid is adjusted with one screw. But there is one significant drawback: the level has fallen - you can throw it away
Functions
Self-leveling (self-leveling) – ensures high speed and accuracy of measurements. Produced within 3-6° in a few seconds.
Determination of volume, area - makes it possible to use a rangefinder to measure the volume or area of a room, container, or area. It is also used when calculating the amount of linoleum, wallpaper, tiles and other finishing materials.
Auto power off – automatically turns off the level or rangefinder when inactive. Saves battery/battery charge and promotes safe operation of the laser device.
Folding bracket – used for working in hard-to-reach places (measuring from corners). Depending on the task, the bracket can open 90° and 180°.
Pythagorean function - allows you to determine the height of a building, the length of a wall or pillar based on the Pythagorean theorem.
Triangle function – calculates the area of a polygonal room or area.
Roulette function (continuous measurements) – measurements are performed once every 0.5-1 second. The measurement results are instantly displayed on the display. Used for marking or determining the exact distance to a certain object.
Memory – saves the results of the latest measurements. Makes the rangefinder easier to use.
Bluetooth – transmits measurement data to a laptop or smartphone for further work with them.
Backlight – allows you to work with the device in low light conditions.
Ada basis a00117
The ada basis a00117 level is equally suitable for both dacha work and real engineers. It is equipped with a light indication and, despite the relatively low price (the instrument will cost you 7,000 - 8,000 rubles ), it is characterized by a good minimum focal length of 30 cm and a compensator lock for safety purposes.
Ada basis a00117
Tool characteristics:
| Focal length (min) | 30 cm |
| Multiplicity | 20x |
| Operating temperature (min) | -25 C |
| Operating temperature (max) | +50 C |
- Short focal length
- High quality optics
- Lack of verification
Price and quality are incomparable, great device. A level with unexpectedly good, clean, bright optics, direct image. Exceeded expectations, although half the price of most. I recommend!
Manufacturer
Among rangefinders, the best in terms of price-quality ratio are considered to be models from ADA Instruments, AEG, Bosch, DeWALT, Stabila, Laserliner, Einhell, Makita, Stanley. It is worth noting their high functionality, accurate and long-range measurements, ease of use and high reliability. The price range is quite high: for household purposes, you can choose cheaper models, their quality and functions are enough for home use.
Rangefinders from the brands Crown, Vector, Dnipro-M, Interskol, Steel, Sndway, Tekhmann, TFA, Topex, YATO, Flus, Forte, Metabo, Intertool, Stark, Sturm are of mediocre quality. Among the disadvantages are periodic measurement errors, long calculations and data acquisition, some brands have a high percentage of defects, as well as poor service support.
The group of the most expensive and professional rangefinders consists of products from Milwaukee, Ryobi, Kapro: they should be purchased only for professional use.
Among the manufacturers of levels, it is also worth noting the brands ADA Instruments, Bosch, Laserliner, DeWALT: good reliability, high functionality combined with an average and high price. These models are highly accurate and durable, easy to use.
Bosch GOL 32 D Professional
Another popular model of optical level is the Bosch GOL 32 D Professional with a durable sealed housing that protects from dust and moisture. In addition to an identical set of devices, additional accessories for the lens are offered, designed to combat flare and stray light when shooting in difficult lighting conditions (with a lens hood). The functionality is practically no different from previous levels; the device operates directly from the battery.
The price of the instrument ranges from 13,000 to 15,000 rubles .
Bosch GOL 32 D Professional
Characteristics declared by the manufacturer:
| Minimum focal length | 30 cm |
| Multiplicity | 32x |
| Operating temperature range | from -10 C to +50 C |
- High magnification factor
- Small minimum focus distance
- Battery operation possible
- Lack of verification
- Small minimum operating temperature
I have extensive experience working with optical levels; I used this device for laying sewer networks. A thing with excellent optics, no complaints, I recommend it.
Measurement range without receiver
This indicator determines the maximum range of a level or rangefinder operating without a receiver. In most devices, the measurement range ranges from several meters to several tens of meters. The longer the measurement range, the more expensive and heavier the device.
The optimal choice of tool for “range” is made taking into account the location of measurements:
- indoors – 10-20 m (levels), 30 m (rangefinders);
- outdoors – from 40 m (levels), from 50 m (rangefinders).
Important: manufacturers indicate the measurement range based on ideal conditions (no bright sun, fog, dust). Therefore, the actual parameter will always be less than the declared one. Choose a level or rangefinder with a margin of range.
Leica NA332
The Leica NA332 is rightfully considered an interesting representative of levels with a shock-resistant case that protects both from weather conditions and from possible falls. A special feature of this model is two focusing speeds, which is convenient for various types of work. Precision is ensured by a highly sensitive magnetic compensator, the set of tools is absolutely standard. The cost of the tool varies between 15,000 - 18,000 rubles .
Leica NA332
Device characteristics:
| Focusing distance, min | 1m |
| Device multiplicity | 32x |
| Operating temperature, min | -20 C |
| Operating temperature, max | +40 C |
- High multiplicity
- Impact resistance
- Two speeds
- Lack of verification certificate included
- Large minimum focal length
A good thing, but more suitable for professionals (like engineers): too complicated for amateurs
Rgk s-20
Another budget option for a level is the rgk c-20. Simple and easy to use, it is distinguished by its high accuracy in conditions of high vibration (relevant for global work with powerful equipment). A standard adjustment kit is available and a reasonable price: a model from rgk will cost you 8,000 - 9,000 rubles .
Rgk s-20
Characteristics:
| Minimum Focus | 20 cm |
| Multiplicity | 20x |
| Minimum t for work | -40 C |
| Maximum t for work | +50 C |
- Light weight
- Convenient minimum focus
- Wide temperature range
- No verification
Working with the level is as easy as shelling pears! It is lightweight, the screws are fully functional, and the magnification is 20x. When working in open areas in the sun at +45 degrees, it did not disappoint. I recommend!
Purpose of the level
One of the most important geodetic works carried out during the construction of any objects is leveling.
For these purposes, an appropriate tool is used - a level.
The purpose of this operation is to determine the difference in heights of specific points on the ground, as well as to study landforms.
Levels are used for:
- design and creation of high-precision geodetic structures;
- installation of technical equipment and structures, for example, for installing power transmission poles;
- decorating the area, leveling large areas;
- predicting the amount of subsidence of any buildings;
- construction work indoors, for example, installation of floors and ceilings.
In everyday life, levels are often used when renovating premises.
For these purposes, there is a separate type of device, which is often called laser levels.
They project laser beams onto flat surfaces and are great for marking corners.
Among other things, the use of a laser level ensures the accuracy of laying tiles and any material where right angles and lines are required.
For this reason, the device is also used for wallpapering, where it is necessary to maintain strictly vertical joint lines.
The level will also be useful for an electrician.
With its help, you can clearly position the location of sockets, switches, safety panels at the same level from the floor, or relative to the horizon.
Also in everyday life, the simplest hydrostatic levels are used, operating on the principle of two communicating vessels with liquid.
Vega l24
A typical representative of the market is the vega l24 level. The model under consideration is difficult to distinguish among its analogues: it is a simple, high-quality instrument in the middle price category (cost l24 - about 10,000 rubles ). Verification certificate available.
Vega l24
Device characteristics:
| Minimum focal length | 55 cm |
| Magnification ratio | 24x |
| Operating temperature range | from -20 C to +50 C |
- Verification certificate
- Reliability, durability
- Low minimum operating temperature
I use it for my construction hacks: everything is convenient and accessible, clients don’t complain
Level Bosch GLL 3-80 Professional and other popular models
Today there are many devices that are designed to take measurements on the ground or indoors. Some of them are more effective, which is achieved due to the quality of the ingredients. Let's consider which devices of this type are worth purchasing.
The most functional device is considered to be the laser level GLL 3-80 Professional, produced by the famous German company Bosch. A similar device is used indoors. The error of the device is extremely small. Deviations are practically not observed even at a distance of up to 10 m. It is worth saying that there are special receivers with which you can increase the range of the instrument to 60 m.
The laser level GLL 3-80 Professional is the most functional device.
The device is powered by batteries. If you use the device without interruptions, the charge will last only 4 hours. Therefore, it is worthwhile to provide additional sets of batteries in advance. This tool is equipped with a holder, thanks to which its location can be adjusted.
The GLL 3-80 Professional level can be used for economic and professional purposes. There are special magnetic type holders on the tool body. Among other things, the device has an automatic adjustment function, which allows for its alignment.
Among the optical levels, it is worth highlighting the H-05 level, which belongs to the high-precision category. This device is professional; it is intended for calculating the difference between points when performing various engineering and geodetic works. When using such a device, you should understand that it requires certain knowledge and skills from the operator. To operate the device, you need a special staff equipped with a half-centimeter scale.
It is worth highlighting several companies that produce reliable and durable equipment. For example, on the modern market you can often find various models of levels manufactured by DeWALT. Stabila also sells high-quality devices.
Devices manufactured by DeWALT are of excellent quality.
Control 32x
Condtrol 32x is a professional domestically produced device with an optical target designator. For 12,000 - 13,000 rubles, you have the opportunity to purchase an instrument with a high magnification telescope and coated optics, which will greatly facilitate the process of measuring distant objects.
Control 32x
Characteristics:
| Min focus distance | 60 cm |
| Multiplicity | 32x |
| Min operating temperature | -20 C |
| Max operating temperature | +40 C |
- High multiplicity
- The target designator makes it easier to find a target
- Lack of verification
I have been using CONDTROL measuring instruments for a long time. I saw an optical level in the assortment, took it without hesitation - and I was not mistaken in the quality! Good optics, excellent visibility
Table: comparison of the presented models
Making the right choice is not easy, especially with the extraordinary variety on the market. We bring to your attention a table with the most important characteristics of the levels described in the article above:
| Model | Multiplicity | Min. focal length | Availability of verification | Price |
| geobox n7-26 | 26x | 1 meter | Yes | 9-10 thousand |
| sokkia b40 | 24x | 20 cm | Yes | 15-20 thousand |
| ada basis a00117 | 20x | 30 cm | No | 7-8 thousand |
| Bosch GOL 32 D Professional | 32x | 30 cm | No | 13-15 thousand |
| Leica NA332 | 32x | 1 meter | No | 15-18 thousand |
| rgk s-20 | 20x | 20 cm | No | 8-9 thousand |
| vega l24 | 24x | 55 cm | Yes | 10 thousand |
| condtrol 32x | 32x | 60 cm | No | 12-13 thousand |
User manual
Typical levels are prepared for work as follows:
- Pre-adjust the telescope eyepiece: point at a large and well-lit object and experiment with the settings;
- Fix the tripod by extending the legs to the required length;
- Install the leveling pipe, gradually adjust its position to an accurate horizontal using bubble levels;
- Proceed with measuring and recording observations according to the chosen leveling method.
If you are interested in the question of how to check an optical level yourself, we recommend that you familiarize yourself with the following videos:
Correct focusing of the measuring device
The next step in setting up a device used in construction is adjusting the optical lens. To carry out this operation, devices are equipped with special elements that allow precise adjustment of the working part.
These include:
- eyepiece rings;
- adjusting screw;
- guide screw.
The first element is the most important in the design of the level. What is the eyepiece ring for? It is designed to focus the eye on the lines that form the grid. This marking consists primarily of horizontal contours, but it also includes one vertical. Measurements are taken exclusively along the longest line located in the horizontal plane.
The screw that is used for focusing allows you to get a clear image of the object being measured. Let's take a closer look at how the setup should be done. A grid of lines should appear in the eyepiece. After a clear image appears, you need to turn the screw that is responsible for focusing. The manipulation is performed until the picture on which the threads are superimposed becomes clear. This kind of correction is made before each measurement data is taken.
Image clarity can be obtained by rotating the screw responsible for focusing.
On a note! When focusing, the vertical line should be strictly in the center of the geodetic ruler. By following the instructions, you can accurately adjust the device and get an answer to the question of how to use the level and staff. Video tutorials that contain a detailed description of setting up and taking data are recommended for viewing.
In order for the calculation accuracy to be maximum, it is also worth knowing how the data is corrected after it has been taken. Proper use of such a device allows you to plan a construction event.
Where can I buy?
A level is by no means an ordinary purchase. We recommend purchasing it from the manufacturers’ official stores or trusted online sites, such as:
- 220 volt;
- Sledgehammer;
- Soges.
Remember: buying used tools increases the risk of unexpected difficulties during the construction process. Safety during the construction of a particular object is paramount, so do not skimp when purchasing and do not trust unfamiliar sellers.
How to use a laser level: common mistakes when operating the device
Many people who use this device for the first time may encounter certain difficulties that will lead to inaccuracies in calculations. Let's consider what errors occur most often when using levels for construction purposes.
First of all, you should make sure that the instrument is completely safe. Of course, modern models of levels are resistant to many adverse environmental factors, but they are susceptible to mechanical stress (shocks). It should also be understood that the reliability of a device is not always regulated by price. Laser levels require more careful maintenance.
On a note! The level of error of the device largely depends on the performance of the locking elements. The screws of the device must be in good condition, otherwise the accuracy of the readings will be significantly reduced. If there are strong gusts of wind in the area where the measurement is being taken, it is recommended to use auxiliary fasteners.
Overheating of the level can negatively affect the accuracy of measurements.
The stability of the device is a very important point. If you do not take this factor seriously, then not only will the final measurement result be inaccurate, but the device itself may suffer. Repairing a level is not cheap, so it is not recommended to turn a blind eye to the basic rules of its operation.
The device rack must be installed in such a way that it is clearly on the surface. This will eliminate the possibility of misalignment. And finally, under no circumstances should the instrument be allowed to overheat. This will negatively affect the accuracy of measurements.
Thus, levels are indispensable devices with the help of which the height of objects is determined. The obtained data is used for the construction of buildings. Household laser models can be used for various purposes when calculating the exact location of building elements is required.
