If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as ............

For the construction of highway (or railway) ............

The longitudinal section of the surface of bubble tube is ............

When the length of a chord is less than the peg interval, it is known as ............

The rise and fall method for obtaining the reduced levels of points provides a check in ............

When the angular and linear measurements are equally precise in traversing, the balancing of a traverse in done by .....…

The instrument used for accurate centering in plane table survey is ............

Which of the following methods of plane table surveying is used to locate the position of an inaccessible points?

If the fore bearing of a line is N26°35'W, its back bearing will be ............