what is backlash error why is it caused how is it avoided
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Backlash error occurs in screw gauge, when we try to rotate the screw very fast to measure a reading then there is some slipping b/w the different screws instead of rotation, which gives an incorrect reading, to avoid this we should rotate the screw in only one direction.
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Reason: It happens due to wear and tear of the screw threads. To avoid the backlash error, while taking the measurements the screw should be rotated in one direction only. If the direction of rotation of the screw needs to be changed, then it should be stopped for a while and then rotated in the reverse direction.
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