Paper 2 · Using a micrometer screw gauge to measure the diameter of a wire
An instrument has a spindle, an anvil, a sleeve scale marked in millimetres, and a thimble scale, and includes a ratchet to avoid over-tightening on the object being measured. What is this instrument called?
Model answer
micrometer screw gauge
Also accepted: micrometer
Explanation: This is a micrometer screw gauge, used to measure small lengths such as the diameter of a wire to a precision of 0.01 mm.
Derived from ZIMSEC Physics 4023/2 Paper 2 Theory, Specimen Paper, Q1
