HAMAR LASER STEALTH Series, General Training Manual

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18
Calculating the Calibration of the Level Vials – Roll Axis
Note: It is very important to warm up the laser for at least 30 minutes before starting this procedure. It is
also very important to level both the Pitch and Roll axis level vials during this procedure. Failure to do
this makes it nearly impossible to calibrate the levels.
1. Level the laser.
Using the adjustment knobs, level the laser so both the Pitch and Roll levels are exactly level (see top
of Figure 8).
2. Zero the target in the Near Position.
Beginning with the Roll Axis, place a target on a point near to the laser. Mark this point with a
Sharpie® or other marker so you can always reposition the target at the same point. Zero the target
according to the readout you are using.
3. Determine Far Reading 1.
Move the target to the Far Point and again mark this point on the surface and record (write it down)
the target reading. This is
Far Reading 1
.
Measure the distance (D1) between the Near Point and the Far Points and write it down.
Note:
It is recommended to repeat the measurements 2 or 3 times to check repeatability.
4. Determine Far Reading 2.
Rotate the entire laser unit 180 degrees. Re-level the laser using the adjustment knobs so that
both
the
Pitch and Roll levels are exactly level. Return the target to the Near Position, ensuring that it is placed
in the exact position as before. Re-zero the target on this point. Move the target back to the Far
Position, again ensuring that it is positioned exactly as before. Record the target reading. This is
Far
Reading 2
.
Figure 11 --
Setup after rotating the laser 180 degrees