Choose a device that is used to measure the inner and outer diameter of pipes .
A
0.1 mm
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B
0.02 mm
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C
0.05 mm
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D
0.001 mm
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Solution
The correct option is B
0.02 mm
A vernier scale is a visual aid that allows the user to measure more precisely than could be done unaided when reading a uniformly divided straight or circular measurement scale. This device can be used to measure the inner and outer diameter of the pipes.