Collimation method is used in
Aprofile levelling
Bdifferential levelling
Ccheck levelling
Dnone of these
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Related Questions:
Chain surveying is most suitable for:
The circle in which a plane tangent to the earth surface at the point observation intersect the celestial sphere is called
If the field temperature is lower than that which the tape was calibrated, it results in:
The value of deflection angle is:
(a)10
(c) 15
Invar tape is used