Checks And Adjustments; Circular Level - Sokkia CX-52 Operator's Manual

33. CHECKS AND ADJUSTMENTS

A CX is a precision instrument that requires fine adjustments. It must be inspected
and adjusted before use so that it always performs accurate measurements.
• Always perform checking and adjustment in the proper sequence beginning
from "33.1 Circular Level" to "33.6 Additive Distance Constant".
• In addition, the instrument should be inspected with special care after it has
been stored a long time, transported, or when it may have been damaged by a
strong shock.
• Make sure the instrument is securely set up and stable before performing
checks and adjustments.

33.1 Circular Level

PROCEDURE Checking and adjusting
1. Level while checking the display.

"7.2 Levelling"

• If the tilt sensor is misaligned,
the circular level is not adjusted
correctly.
2. Check the position of the bubble
of the circular level.
If the bubble is not off-center, no
adjustment is necessary.
If the bubble is off-center, perform
the following adjustment.
3. First confirm the off-center
direction.
Use the adjusting pin to loosen the
circular level adjustment screw on
the side opposite to the direction
the bubble is displaced to move
the bubble to the center.
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