The following sights are taken on a "turning point"

While doing levelling in undulating terrain, it is preferable to set the level on:

The total number of zeroes graduated on a surveyors compass is

The method generally preferred to for contouring an undulating area is,

The curvature of the earth is taken into consideration if the limit of survey is:

Imaginary line passing through points having equal magnetic isogonic line declination is termed as

How many types of bench mark are there?

When the temperature rises, length of bubble

Sensitiveness of bubble tube can be increased by