Surveying
Refraction correction

partially eliminates curvature correction
adds to the curvature correction
completely eliminates curvature correction
has no effect on curvature correction

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Surveying
Bowditch rule is applied to

determine the effect of local attraction
None of these
an open traverse for graphical adjustment
a closed traverse for adjustment of closing error

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Surveying
The cross hairs in the surveying telescope are placed

midway between eye piece and objec-tive lens
much closer to the eye-piece than to the objective lens
much closer to the objective lens than to the eye piece
anywhere between eye-piece and objective lens

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