Leica NA720 User Manual page 26

NA720/724/728/730/730 plus, Operation
Centring
Step Description
For possible centring over a ground point:
1. Attach plumb bob.
2. Loosen central fixing screw slightly and shift instru-
ment parallel on tripod until the plummet is exactly
over the point.
3. Tighten central fixing screw.
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