The vertical axis need not be perpendicular to the line of collimation in:
ADumpy level
BWye level
CTilting level
DAll type of bubble tube
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An imaginary line joining the points of equal elevation on the earth represents:
Fore bearing and back bearing of a line exactly differ by:
Latitude of the observers position is equal to altitude of
One of the duties of leader in chain surveying is:
Calculate the distance between instrument and staff if the staff readings observed were 1.11 m,1. 86 m and 2.61 m. The value of (f/i) is 100 and (f+d) is 0?