... : Put the calibrator under camera,first press CAL button until 3 munites ,on screen can be display:standard type DX,through SEL ... line between distance equal to calibration length,and press CAL button,on the left screen can show the calibration OK,then into ... with calibration X ,little different is when you press on CAL button then off,should be continuous 5 times.3.Surveying: Put ...