The Optical Sight; Laser Plummet - Pentax W-1502N Series Instruction Manual

Note: Be careful when adjusting the three screws, and the tightening
tension is identical for them.

5.3 The Optical Sight

1) Check
1. Mount the instrument on a tripod and fix it.
2. Set a cross mark target which apart from
the instrument about 50m.
3. Take the telescope sight the cross mark.
4. Observe the optical sight collimator
whether collimating the cross mark, if
collimate the
necessary; if not, adjust it.
2) Adjustment
1. Mount the instrument at the tripod and fix it.
2. Set a cross mark target which apart from the instrument about 50m.
3. Take the telescope sight the cross mark.
4. Loosen two fixing screws, adjust the collimator, then fix the two screws
again.

5.4 Laser Plummet

5.4.2 Laser Plummet
1)Check
1. Set the instrument on the tripod, and place a piece of
white paper with a cross drawn on it right under the
instrument.
2. Move the paper so that the intersecting point of the
cross comes to the centre of the laser mark.
3. Rotate the instrument around the vertical axis, and
observe the centre mark position against the
intersecting point of the cross at each 90° rotation.
4. If the laser mark always coincides with the
intersecting point, no adjustment is necessary.
mark, adjustment is not
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