Fig. 1.1 shows one of the basic laboratory instruments, used to measure small lengths such as wire diameter or sheet thickness. What is the name of this instrument?

Model answer

micrometer screw gauge

Also accepted: micrometer

Explanation

The instrument with a barrel scale and a thimble scale, used to measure small lengths, is the micrometer screw gauge.

Derived from ZIMSEC Physics 5055/2 Paper 2 Theory, November 2017, Q1

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