The inner diameter of a small test tube can be measured accurately using a?

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A. Micrometres screw gauge
B. Pair of dividers
C. Metre rule
D. Pair of vernier calliper

Correct Answer:

Option D – Pair of vernier calliper

Explanation

A vernier scale is a visual aid to take an accurate measurement reading between two graduation markings on a linear scale by using mechanical interpolation; thereby increasing resolution and reducing measurement

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