Question

During negative zero error in Screw Gauge, zero mark of circular scale lies_____ base line.

above

below

coincides with

none of the above


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Answer 1

Answer:

When the zero error is negative zero error, it will be added to the measured reading and when the zero error is positive zero error, it will be subtracted from the measured value.

Generally , the zero error will be coming in terms of circular scale division.

Thus, correction for negative zero error =+[coincide division of circular scale ×L.C]

Answer 2

During negative zero error in Screw Gauge, zero mark of circular scale lies_above base line.