The systematic errors which persist and have regular effects in the performance of a survey operations, are due to ............

Can the vertical axis coincide with any other axis in any position of telescope?

When the measured length is less than the actual length, the error is known as ............

Right face and left reading are taken to ............

A 30 m chain after measuring a distance of 6000 m was found to be 10 cm more than the designated length. If the chain wa…

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

Resolving power of a telescope depends on ............

If whole circle bearing of a line is 120°, its reduced bearing is ............

The angle between two plane mirrors of optical square is ............