S+SNZ Spatial Measurement Practice Questions - S+SNZ Professional Examination - Spatial Measurement Option (New Zealand) Exam

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A surveyor uses a retroreflective prism with a physical offset (prism constant) of -30 mm. If the total station is accidentally set to a prism constant of 0 mm, what will be the effect on the recorded distance?

The measured distance will be 30 mm too short. The measured distance will be 30 mm too long. The measured distance will be correct, as the instrument self-calibrates. The measured distance will have an error that scales proportionally with the distance.

Correct Answer:

The measured distance will be 30 mm too long.

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