The obstacle, which obstructs vision but not chaining is a ............

The plane table surveying is ............

For indirect ranging, number of ranging rods required is ............

The space of cross-sections in a hilly country is usually ............

The following readings were taken on a uniformly sloping ground ............ 0.500, 1.000, 1.500, 2.000, 1.200, 1.700, 2…

The shift of a curve is equal to ............

Line of collimation ............

A base line in a chain survey ............

The tangent to the liquid surface in a level tube, is parallel to the axis of the bubble ............