Height of instrument method of leveling is ............

In locating the details of inaccessible objects visible at least from transit stations, the method used is ............

The latitude and departure of a traverse line are both positive when the whole circle bearing of the line lies in the ..…

The boundary of water of a still lake, represents ............

The surface if zero elevation around the earth, which is slightly irregular and curved, is known as ............

When the cross-hairs are not clearly visible ............

The line of collimation method of reduction of levels, does not provide a cheek on ............

In survey it was recorded that ΣRise = 0, then ............

An instrument error in compass survey is because of ............