Question

What do you mean by zero error of a screw
gauge ? How is it accounted for ?​

Answer 1

Answer:

Zero error is caused by wear and tear of the screw, nut, spindle and / or the anvil. When the spindle is closed so that the face of the spindle touches the anvil, the scales should read exactly 0.00mm

Explanation:

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Answer 2

Answer:

ZERO ERROR OF SCREW GAUGE MEANS THAT WHEN THE SCREW IS IN 0 IT SHOULD COINCIDE WITH THE LINE OF GRADUATION IF THIS NOT HAPPEN THEN THE OBJECT IS SAID TO BE ZERO ERROR

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