Hilti PM 50MG-22 Manual De Instrucciones Original página 40

8. Calculate the value R.
▶ The value R should be less than 3 mm.
▶ The value R should be less than 1/8".
7.1.3 Checking perpendicularity (horizontal)
1. Position the tool so that the lower plumb beam coincides with the center of a reference cross marked in
the middle of a room at a distance of about 5 m from the walls.
2. Mark all 4 points of intersection on the four walls.
3. Rotate the tool through 90° and make sure that the center of the point of intersection coincides with the
first reference point (A).
4. Mark each new point of intersection and measure each offset (R1, R2, R3, R4 [mm]).
5. Calculate the offset R (RL = room length).
▶ The value R should be less than 3 mm or 1/8".
7.1.4 Checking the accuracy of the vertical line
1. Position the tool at a height of 2 m (pos.1).
2. Switch the tool on.
3. Position the first target plate T1 (vertical) at a distance of 2.5 meters from the tool at the same height (2
meters), so that the vertical laser beam strikes the plate. Mark this position.
4. Then place the second target plate T2 at a position 2 meters below the first target plate, so that the
vertical laser beam strikes the plate. Mark this position.
5. Mark position 2 at the opposite side of the test setup (mirror image) on the laser line on the floor at a
distance of 5 meters from the tool.
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