Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is Correct Answer Invar

Invar is an alloy of iron and nickel with a negligible coefficient of expansion,.
and it is used in the making of clocks and scientific instruments like surveying tapes
Bissoy MCQ

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