Datasheet

3PR, 3PG
Users Manual
8
Check Accuracy of Plumb
To check the accuracy of the plumb:
1. Find a site that has a ≥3.0
5 m (10 ft) vertical height.
2. Place a cross mark at the bottom of the site.
3. Center the down laser on both axes of the cross mark.
See Figure 6.
≥ 3.05 m
10 ft
123
4
-
≤ 6 mm @ 30 m
1 2
1 2
1 2
Figure 6. Plumb Accuracy
4. Place a cross mark at the point where the up laser
intersects the target area at the top of the site.
5. Turn the Product 180 ° on its center.
6. Repeat step 3 and step 4.
If the first and second cross marks on the target area at
th
e top of the site are the same, the laser is plumb.
7. If the cross marks are not the same, measure the
d
istance between the center points of the two cross
marks and divide by two to calculate the difference of
error.
If the distance is ≤6 mm @ 30 m, the laser is within
calibrat
ion accuracy.
Maintenance
The Product does not require maintenance but treat the
Product as a calibrated instrument. Do not drop the Product.
 Warning
To prevent eye damage and personal injury, do not
open the Product. The laser beam is dangerous to the
eyes. Have the Product repaired only through an
approved technical site.