-16-
7.2 AUTOMATIC COMPENSATOR
1) Center the bubble in the circular level
.
2) While turning the level-
ing screw 1/8 of a turn to
the right or left, check
the movement of the hor-
izontal cross-line while
sighting a clear target.
The cross-line should
bounce, then stabilise.
Fig.7.4
With automatic levels it is advisable to
check the movement of the automatic com-
pensator before use.
A similar test can be performed as follows:
Center the bubble in the circular level.
Tap the tripod legs or the main body while sighting
a clear target. The horizontal cross-line should
bounce, but immediately return to the original posi-
tion, thus indicating that the automatic compensator
mechanism is working normally.
4
Summary of Contents for C300
Page 1: ...SURVEYING INSTRUMENTS C300 C310 C320 C330 自動レベル Automatic Level 取扱説明書 OPERATOR S MANUAL ...
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Page 56: ...第 4 版 05 0806 4th ed 05 0806 Printed in China 2004 SOKKIA TOPCON CO LTD ...