21
Horizontal Line Calibration Test
1. Set up the Rotary Laser on a level surface, next to an unobstructed
100ft (30m) long wall.
2. Level the Rotary Laser as accurately as possible.
3. Turn on the Rotary Laser, mark the position of the beam next to the
laser, and mark the position of the beam at a point approximately
100ft (30m) away.
4. Move the Rotary Laser next to the point that you marked at a distance
of 100ft (30m).
5. Level the Rotary Laser as accurately as possible.
6. Turn on the Rotary Laser, mark the position of the beam next to the
laser, and mark the position of the beam next to the original point
7. Measure the height difference between both sets of points. Ideally
the two measurements should be identical; however under field
conditions a difference of up to ¼ inch (6mm) is acceptable.
Summary of Contents for Prolaser 897
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