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Horizontal Calibration

(1)Checking Calibration

1 Set up a tripod 50m(160ft) from a wall. Mount the instru-

ment on the tripod, facing the X1 toward the wall.

2 Turn the unit on and allow auto-leveling to complete.

3 Place a piece of paper on the wall. Detect a laser posi-

tion on the wall with target and mark it. Turn the instru-

ment off.

4 Loosen the tripod screw, rotate the instrument 180

degrees.

Note

• When rotating the instrument, avoid knocking it off level or changing

height.

∞

50m (160feet)

Target

Wall

Instrument as seen from above

Panel side

∞

Topcon RL-VH3 Series User Manual

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