Plate Level And Circular Level; Plate Level; Circular Level - Pentax W-1502N Series Instruction Manual

5.2 Plate Level and Circular Level

5.2.1 Plate Level

1) Check
1. Mount the instrument on a stable device (as
tripod , adjusting device ),and fix it.
2. Level the instrument until the plate level is
parallel to a line linking leveling foot screws A
and B, then adjust the two screws to center the
air bubble.
3. Turn the instrument 180°, observe the
moving direction of the bubble, if it is still
centered, no adjustment is necessary, if not,
you have to adjust it.
2) Adjustment
1. Mount the instrument on a stable device and
fix it.
2. Level it roughly.
3. Turn the instrument and make the plate level
be parallel to a line linking two leveling foot
screws, then adjust the two screws to center the air bubble .
4. Turn the instrument 180°, adjust the Adj-screw with adjustment pin
slightly to correct half of the bubble's displacement when it doesn't move,
5. Repeat the operation (3) and (4) until the air bubble remains centered in
any position .

5.2.2 Circular Level

1) Check
1. Mount the instrument on a stable device
and fix it.
2. Level it accurately by the plate level.
3. Observe the bubble of the circular level, if
it is centered, no adjustment is necessary, if
not, you have to adjust it.
2) Adjustment
4. Mount the instrument on a stable device
and fix it.
5. Level it accurately by the plate level.
6. Adjust the three adjusting screws to center
the bubble by a wrench.
Circular
Adjusting
75