SHANGHAI ESURVEY GNSS CO., LTD.
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4. Do one of the following:
o If the zenith is 90° (the measurement
ground is flat), calculate distance D
following formula D = 100 * L:
100 refers to the stadia proportion
constant of the instrument.
o If the zenith is not 90° (the
measurement ground is curve),
calculate distance D following
formula D = 100 * L * sin
2
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