Datasheet

3PR, 3PG
Users Manual
6
To determine if an existing item is plumb:
1. Point either the up or down laser at the target area.
2. Measure the distance from the item to the laser. See
Fig
ure 4.
3. Repeat step 2 at various distances from the Product.
If the measurements are the same from each distance
fro
m the Product, the item is plumb.
1
=
=OK
2
1
2
Figure 4. Plumb of Existing Item
Check Accuracy of the Product
Periodically check the accuracy of the Product.
Check Accuracy of Level
To check the accuracy of the level:
1. Find a horizontal site that is almost level, preferably a
con
crete slab, that is ≥7.62 m (25 ft) wide with two
op
posing walls to use as targets. You can also use
scrap wood as targets. See Figure 5.
2. Place the Product about 15 cm (6 in) from target
.
3. Point the horizontal laser at target
.
4. Place a mark
at the point where the horizontal laser
intersects the target area.
5. Turn the Product 180 ° on its center so that the
horizont
al laser intersects with target
.
6. Place a mark
at the point where the horizontal laser
intersects the target area.
7. Repeat steps 2 through 6 with the Product 15 cm from
target
.