Local attraction at a place may be due to ............

An invar tape is generally used for accurate measurement of distance because it possesses ............ coefficient of th…

Which of the following errors can be eliminated by taking mean of both face observations?

The tension, at which the effects of pull and sag for a tape are neutralised, is known as ............

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

An instrument error in compass survey is because of ............

A tie line in a chain surveying ............

For which of the following permanent adjustments of theodolite, the spire test is used?

Different grades are joined together by ............