Cross line laser from SL Laser

Laser stands for “light amplification by stimulated emission of radiation”. Electromagnetic beams are extremely bundled in photon form and emitted with great intensity over a narrow frequency range. In the process, a narrow radiation direction is determined with the aid of mirrors.

The point created in this way on a projection surface such as a wall can take on various shapes with further mirrors or even rotating mirrors, i.e. appear as a line, circle or cross. An important characteristic for this cross is the exact alignment of the two cross laser line at a 90 degree angle. Thereby the good recognizability of the cross laser lines in green or red as well as the range of the projection depends on the output power of this cross laser.

The precision with which a positioning laser throws the cross or a line on the wall depends on the design. Even for home use, a cross line laser or line laser should achieve at least an accuracy of +/- 5 mm over a length of 10 meters. Professional positioning lasers achieve greater precision.

The cross line laser or cross laser and line laser has become so popular and well-known as an instrument that it has long since conquered the DIY market. When renovating, rebuilding or simply for wallpapering, the do-it-yourselfers like to use the cross line lasers or cross lasers for the exact positioning of components or wallpaper courses. Accordingly, the prices for cross line lasers and line lasers have dropped considerably in the last 20 years – mass production makes it possible. But as always and everywhere, there are big differences in the suitability of positioning lasers for home use or hobbyists and a professional application under the toughest conditions.

Working on a construction site, in woodworking or in industry requires a different level of performance as well as robustness and resilience in terms of range, continuous use, shock resistance and dust tightness. The professional SL-Laser positioning lasers such as the cross, line or circle positioning lasers are of course not only tested under the toughest conditions, but prove themselves every day in thousands of companies worldwide.

It may be related to the problems of finding reliable craftsmen today at a reasonable hourly wage. In any case, the ambition of do-it-yourselfers has greatly increased and, accordingly, their equipment has improved. While in industry and crafts the cross line lasers and line lasers are mostly used and equipped for recurring tasks, such a cross line laser for the layman has to perform quite different tasks. Whether wallpapering, aligning furniture, mounting sinks or hanging pictures, a cross line laser should be suitable for everything.

Thus, cross line lasers and line lasers are also offered self-leveling. This is to solve the problem of exact alignment of the device. For this purpose, there is a pendulum inside the cross line laser, which is always oriented to the force of gravity and brings the laser diode connected with it evenly to an exactly horizontal or vertical position. However, this cannot achieve the precision of a professional device, even branded devices have an inaccuracy of +/- 4 degrees.

If you want to be on the safe side at home, you can set up your cross laser or cross line laser on a tripod, the accuracy of which is determined with the spirit level. In this case, however, there must be no jerks on the device during work. Therefore, the basic position should be well planned so that the cross laser or cross line laser is not in the way during work.

Therefore, most cross line lasers for home use are also equipped with a battery, because a cable interferes significantly. Furthermore, these cross line lasers and line lasers mostly have a certain dust and water resistance, so that they can at least withstand the dirt load of simple work. It is certainly worth taking a look at the specified protection class here.