Leica NA720 User Manual page 30

NA720/724/728/730/730 plus, Operation
Line levelling
Step Description
1. Turn Hz-circle to "0".
2. Align instrument to point B and aim on the
centre of the staff.
3. Read off Hz-angle from Hz-circle:
Example above: Hz = 60°.
008798_001
Wanted:
Height difference (∆H) between point A and B.
Degree
70 60
008797_001
ΔH
30
50