Leica DNA03 User Manual page 28

Centering the circular level
A
1 Position ocular above foot screw C.
2 Turn foot screws A and B simultaneously in
opposite directions until the bubble is in the
center (of the imaginary "T").
B
C
DDNA03_Horiz_2
3 Turn foot screw C until the bubble is centered.
28
NA03_Horiz_3