When the whole circle bearing of a traverse line is between 90° and 180° then ............

The method of measuring distance by pacing is chiefly used in ............

The trapezoidal rule of volumes V of an embankment divided into a number of sections equidistant D, is given by ........…

Dumpy level is most suitable when ............

Surveys which are carried out to provide a national grid of control for preparation of accurate maps of large areas, are…

The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, i…

Distance between two neighboring brass rings is ............

An invert is taken when the point is ............

The angle between the reflecting surface of a prism square is ............