Reduced level of a point is its elevation with reference to:
AGround level
BDatum
CLine of collimation
DChaining
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Related Questions:
Which of the below is not a temporary adjustment of the prismatic compass
What is the angle of intersection of a contour and a ridge line?
The lines passing through points at which the magnetic declination is equal at a given time are called:
Contour lines cross ridge lines or valley lines are at:
In prismatic compass, the magnetic needle used is: