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Which scale you prefer if there is a need to measure most accurately.

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Which scale you prefer if there is a need to measure most accurately.

(a) Plain scale

(b) Vernier scale

(c) Ordinary scale

(d) Comparative scale

This question was posed to me during an interview for a job.

My question is from Types of Scales topic in chapter Scales of Engineering Drawing

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Correct option is (b) Vernier scale

The explanation: The plain scale gives only up to a single decimal. Comparative scales are just used to represent two different units. The vernier scale gives up to 2 decimal values.

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