When carrying out repair or construction work, sooner or later there is a need to measure the level of flatness of the planes. Considering the fact that in many buildings there are practically no flat walls, any finishing and construction work can turn into a headache. To determine the flatness of any surface, a laser level is perfect, which can be used when leveling walls, laying tiles, installing windows, etc. Therefore, the question of how to use the laser level, today is quite relevant.
When choosing a laser level, be guided by the accuracy and range of measurements of the device.
The principle of operation and types of laser levels
The principle of operation of the laser level is to create a projection of the laser beam on the desired object or group of objects (Fig. 1). Inside the box of the device there is LED equipment that emits a light flux. With the help of a prism, this stream forms a laser beam, creating a visible line at the output. The projection in the form of a point or line is a guide when performing finishing and construction work.
Figure 1. The principle of the laser level.
In the modern market of construction equipment you can find 2 types of laser levels: static and rotary. The first type is equipped with 2 light sources that project rays onto perpendicularly placed prisms. This allows you to get 2 visible planes intersecting at a certain angle. In the presence of 3 LEDs and more, it is possible to project more planes, which is very convenient when working simultaneously with several objects. Modern models are additionally equipped with a laser plummet that allows you to direct the beam simultaneously to the floor and ceiling.
In the rotational levels, the light source is placed on the motor shaft, which allows it to rotate 360 °. In them, the light is projected not onto the prism, but onto the focusing lens. Such a device allows you to get markup on any of the surrounding objects. Rotational level is great for creating markings for wallpaper, leveling ceilings, etc.
Among the main advantages of laser levels worth noting:
Figure 2. Check of evenness on a large area of the wall.
- Wide scope of application. The laser level can be used both in open areas and indoors, projecting a beam onto any surface.
- High accuracy of measurement. The markup made using a laser level is characterized by high accuracy, close to the ideal.
- The speed of measurement. Using a laser level allows you to reduce the process of marking the desired surface several times.
The only drawback of such a device is its cost, which can reach $ 1000 or more.Back to table of contents
Preparation of a laser level for work
Before you start using the laser level, you need to provide it with power, which can be supplied from batteries or a battery. If after installing the power source and pressing the corresponding button a beam appeared, you can proceed to work. In this case, you should know that different models of levels are designed for different operating conditions. Therefore, if measurements are planned on the street, then the instructions for the device should clarify whether this can be done.
Modern models are equipped with a beam selection function. Therefore, to increase the operating time of the level without recharging, it is recommended to choose exactly the beam that is needed when carrying out certain works. For example, if you want to measure the unevenness of the floor, then the beam should be used only horizontal.Back to table of contents
Installation and adjustment of a laser level
The main requirement for the correct operation of this tool is its rigid fixation, since even the smallest displacement during the work will lead to inaccurate readings. The level can be mounted on almost any basis:
Figure 3. When laying tiles, be guided by the projection of the beam.
- On the floor or other horizontal surface (chair, table, etc.).
- On special bars, which are mounted between the floor and ceiling. This makes it much easier to mark the level of suspended ceilings.
- Installation on a tripod. In case of need to change the height of the installation is better to use adjustable tripods.
- Fixing on the wall or ceiling with velcro, suction cups or magnets. Also there are models with the possibility of mounting them on pipelines.
After installing the laser level it is necessary to align it with respect to the horizon, since without this it will be impossible to get the correct marks. Simple models are aligned manually. To do this, in their case is placed bubble level. To achieve vertical or horizontal flatness, you must either raise (lower) the level manually, or use a trigel - a special stand.
More expensive models are equipped with a self-leveling mechanism. First, a rough alignment is performed manually, after which the automation is turned on for more accurate alignment.
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It must be remembered that with each transfer of the device it is necessary to re-level it.
Application of a laser level for various purposes
Figure 4. For the device inclined design, use a self-leveling level.
Surface alignment. To see how the required base (floor, ceiling, wall) is even, direct the beam from the level along it. To complete this task, you will also need a ruler, which is alternately displayed in several places. Along the beam, it is possible to calculate the elevation differences at the control points, which will make it possible to calculate the quantity of the mixture required for leveling (Fig. 2).
Even with such finishing work as sticking wallpaper, level can be very useful. A vertical beam, projected onto the wall, allows you to align the wallpaper vertically, and the horizontal one will help you to glue the border evenly.
Many builders use a laser level for smooth tile installation, which can project cross rays horizontally and vertically. To do this, the rays must be directed along the future tile joints (Fig. 3).
When it is necessary to construct any inclined surface (for example, to attach a staircase railing), the laser level turns into a very useful device. All self-leveling levels have the ability to disable this feature. This allows you to set the level, for example, on a tripod at the right angle and get a projection on which the installation work will be carried out (Fig. 4).
When using a laser level, you need to remember about safety. Laser beams have a negative effect on the eyes, therefore it is strictly forbidden to direct the device to a person. Usually, safety glasses are provided in the configuration to the level, but if they are not there, then it is better to spend money on their purchase than on treating your eyes.