In a lemniscate curve, the angle between the tangent at the end of the polar ray and the tangent at the commencement of the curve (i.e., straight) is ............ the angle between the polar ray and the straight.

A 15 cm theodolite means ............

For high sensitivity of the bubble tube ............

The direct angles may have any value between ............

In the surveying telescope, diaphragm is held ............

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, …

If a tacheometer is fitted with an anallatic lens ............

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

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