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5.2 Plate Level and Circular Level
5.2.1 Plate Level
1) Check
1. Mount the instrument on a stable device (a
tripod , adjusting device ),and fix it.
2. Level the instrument until the plate level i
parallel to a line linking leveling foot screws
and B, then adjust the two screws to center th
air bubble.
3. Turn the instrument 180°, observe th
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
slightlytocorrecthalfofthebubble’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 devic
and fix it.
2. Level it accurately by the plate level.
3. Observe the bubble of the circular level, i
it is centered, no adjustment is necessary, i
not,youhavetoadjustit.
2) Adjustment
4. Mount the instrument on a stable devic
and fix it.
5. Level it accurately by the plate level.
6. Adjust the three adjusting screws to cente
the bubble by a wrench.
Circular
Ad
ustin
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