SHANGHAI ESURVEY GNSS CO., LTD.
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2. To get the face left angle reading F1, aim at the cross-hairs of collimator or the
obvious target at a distance at telescope left, and press F3 ENT:
3. To get the face right angle reading F2, aim at the cross-hairs of collimator or the
obvious target at a distance at telescope right, and press F3 ENT. The system
automatically calculates the new error:
4. Press F3 YES to view calibration data:
5. Judge if the error is within allowable range:
Note: You can calculate the vertical index error by formula (Fl + F2 - 360°) /
2.
o If the error is less than 10'', press F4 NO to exit.
o If the error is greater than 10'', press F3 YES to view calibration data.
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