Sokkia B20 Operator's Manual page 53

Automatic level
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3) Unscrew and remove the adjusting screw cover
4) Use the adjusting pin to eliminate the difference between
b
' and b
2
example shown in Fig.8.6 b
zontal line needs to be lowered. To lower the horizontal
line, carefully loosen the adjusting screw by a small
amount using the adjusting pin
line, tighten the adjusting screw. (Fig.8.8)
5) Repeat steps 1) and 2) of the adjustment procedure until
the difference between b
. (See
"10. STANDARD EQUIPMENT"
2
Fig.8.7
is larger than b
2
. To raise the horizontal
17
Fig.8.8
' and b
is small.
2
2
- 23 -
.
13
.) In the
'. The hori-
2

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