when is a vernier callipers said to be free from zero error?
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Vernier caliper is a measuring instrument,which is used in the laboratory to increase the precision in the measurement of lengths of objects. It consists of two scales one is fixed main scale and the other is sliding vernier scale.Vernier caliper is used to provide a precision to 0.01 mm.
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Explanation: There are two kinds of Zero Errors in Vernier Callipers-
1. Positive Zero Error
2. Negative Zero Error
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