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22.CHECKS AND ADJUSTMENTS
OS 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 "22.1 Circular
Level" to "22.6 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.
The bubble tube is made of glass, so it is sensitive to temperature changes or to shock. Check and
adjust it as outlined below.
• Be careful that the tightening tension is identical for all the adjusting screws. Also, do not over-
tighten the adjusting screws as this may damage the circular level.
PROCEDURE Checking and adjusting
1. Level while checking the display.
"8.2 Levelling"
• Tap in the status bar or tap Tilt angle
compensation icon in Starkey mode to display
electric circular level.
• If the tilt sensor is misaligned, the circular level is
not adjusted correctly.
"22.2 Tilt Sensor"
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.
22.1 Circular Level
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