In levelling operation, the point of known elevation is termed as
ABench mark
BContour
CPlane
DBacksight
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
An Example for a level surface is:
Method of ranging adopted in Forest areas.
Curvature correction to a staff reading in differential levelling survey is ...............................
Bad ranging is an example for
Auxiliary theodolite station near an inaccessible main triangulation station: