![]() ![]() As with the “X” axis the two heights should be the same. So, now face the “Y” axis to wall mark the height and rotate the body of the laser by 180° and mark the height again. Now we need to check the second axis “Y”. Note that the further away from the wall the laser is the more accurate your calibration check is. If the two marks you have made are are exactly the same height then the calibration of the “X” axis is good. ![]() Next rotate the body of the laser 180° and again mark the height of the laser on the paper. Place a piece of paper on the wall and mark the height of the laser. Place the laser on the surface/tripod and aim the “X” axis at a wall, turn on the laser and make sure you can see the laser beam. On a laser which does not have these markings you will need to choose an “X” and “Y” axis. Many rotating lasers have an indication of the two axis on their casings often marked with an “X” and “Y”. AxisĪ laser has two axis at 90° to each other, you need to check both axis to determine if the laser is within calibration. It will need a stable and reasonably level surface such as a table or tripod set up about 5 to 10m away from a wall. To check the calibration of a laser level you will need a room which is not too brightly lit. If the bubble is in a different position then the level is out, note that the surface does not need to be perfectly level for this method. If the bubble is again in the same position touching the new left line and 2mm from the new right then the spirit level is calibrated and working well. Now rotate the level 180° on the same surface in the same location and agin look at the bubble. With a spirit level you place the level on a surface and look at the position of the bubble, lets say that the bubble is touching the left line and a 2mm gap to the right line. The best way is to check your laser against its self, very much like checking a spirit level. But this can often cause more problems than it solves. You could of coarse compare the levelling results of your laser to another laser level. Vertical, plumb and square is a separate topic and will be covered in a future post. In the following guide we will look at how to check the horizontal calibration of your rotating or 360° 3D line laser. However, we have never really covered how to check you laser for calibration in the first place. The Laser Level review have produced a number of guides on how to calibrate various models of laser level. Following is a guide on checking your laser level’s calibration. ![]()
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