Topcon GLS-1000 SERIES, Instruction Manual, Page: 27 / 76

4-4
4 PREPARATION FOR MEASUREMENT
3) Use the horizontal jog to turn the instrument as shown in the figure. Make the collimating window
parallel to the line connecting the leveling screws A and B of the tribrach (or make a random choice
of any two).
4) Turn the leveling screws A and B, and adjust the Y-inclination on the display to ±6' or less.
5) Turn the leveling screw C, and adjust the X-inclination on the display to ±6' or less.
Collimating window
Tribrach
Horizontal jog
Leveling screw A
Leveling screw B
TILT SETTING [ON]
X :+0
°
03'45"
Y : 0
°
00'00"
ON OFF
Leveling screw C
TILT SETTING [ON]
X :
0
°
00'00"
Y :+0
°
00'06"
ON OFF