FUTECH - Vertical alignment with the Procross 8.0 DS Green Cross line laser

With a construction laser it is particularly easy to work perfectly perpendicular on the job site at any time. In this video we show you the differences between a cross line laser, a 3D laser and a rotary laser for vertical alignment.
Not all rotary lasers can work vertically. Only multifunctional rotary lasers which you can tilt on their backside are able to do this.
The easiest way to explain the differences is with a common application on the job site: the layout of 90° angles. We are going to measure the corners of the terrace with 3 different types of lasers: cross line lasers, 3D lasers and rotary lasers. The 2 corners near the house are already indicated. We have also drawn 2 pencil markings as guideline at 10cm from these corners.
You can easily place the plumb bob of a cross line laser on the first pencil marking. Turn the laser around its axis. With the fine adjustment you can also find the second pencil marking very quickly and precise, even at large distances. The first laser line is now perfectly parallel to the back facade, the second laser line is perpendicular to the back facade. We can measure the third angle along this line.
We will measure the fourth angle in exactly the same way with a prism or 3D laser. We place the plumb bob on the second pencil marking. We rotate the laser to find the first pencil marking. This is a bit more difficult because 3D lasers have no fine adjustment. Even more, because the plumb bob is next to the device, we need to constantly check that the plumb bob remains exactly on the pencil marking. Once this is done, we can measure the fourth angle along the laser line perpendicular to the building.
Finally, we use a rotary laser to check whether the third and fourth angles are perpendicular as well. We put the laser in vertical mode and stop the rotation. We place the stationary laser dot exactly at the third corner. We start the laser and then position the device until the laser line is almost exactly at the fourth angle. Again, make sure that your laser line perfectly crosses the third corner. With the arrows on the keypanel of the rotary laser, you can now let the laser line shine perfectly through the fourth angle. If all went well, the plumb line of the rotary laser now shines exactly on the first angle.
This video clearly shows that cross line lasers are the fastest and most precise solution for setting 90° angles. This is because they are the only type of device with a central plumb bob and a fine adjustment. With the FUTECH PROCROSS 8.0 this is also possible over distances up to 2 x 200m and in rainy weather.