A screw gauge has a least count 0.001 cm and zero error + 0.007 cm. Draw a neat diagram to represent it.
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Below diagram shows a screw gauge with least count 0.001 cm and zero error + 0.007 cm:
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How can the least count of a screw gauge be decreased?
What is backlash error? Why is it caused? How is it avoided?
What do you mean by zero error of a screw gauge? How is it accounted for?
Explain the terms —
(i) pitch, and
(ii) least count of a screw gauge.
How are they determined?
