e-survey ESL3 Panduan Memulai Cepat - Halaman 5

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Check the Collimation Axis

1. Center the bubble in the circular level.

2. Do one of the following:

 Adjust the leveling screw near the collimation axis

1/8 turn, and observe the moving of the crosshair.

 Aim the target that is easy to see, and slightly tap

the tripod and instrument.

CAUTION: It is the normal situation if the crosshair

suffers instant deviation and immediately turns to

normal.