Surveying
A Nautical mile is

One minute arc of the great circle passing through two points
1855.109 m
One minute arc of the longitude
All of these

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Surveying
Bowditch rule is applied to

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

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Surveying
If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated

on its outer spindle with a relative motion between the vernier and graduated scale of lower plate
on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate
on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate
on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

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