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136
27. CHECKS AND ADJUSTMENTS
A SET 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 "27.1 Plate Level" to "27.8 Guide Light".
• 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.
The bubble tube is made of glass, so it is sensitive to temperature changes or to
shock. Check and adjust it as outlined below.
X
PROCEDURE Checking and adjusting
1. Level the instrument and check
the position of the bubble of the
plate level.
C
"7.2 Levelling", steps 3 to 5.
2. Turn the upper part through 180°
and check the bubble position.
If the bubble is still centered, no
adjustment is necessary.
If the bubble is off-center, adjust as
follows.
3. Correct half of the bubble
displacement using levelling foot
screw C.
27.1
Plate Level
X130R.book 136 ページ 2003年10月8日 水曜日 午後12時53分
Summary of Contents for 130R Series
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