General Studies · Metrology
What does a zero error in a micrometer screw gauge indicate during its calibration?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The instrument can only measure lengths in millimeters
- 2The zero mark on the thimble does not align with the datum line when measuring faces are in contact✓
- 3The instrument is permanently damaged and completely unusable
- 4The instrument is perfectly calibrated and accurate
Correct answer
The zero mark on the thimble does not align with the datum line when measuring faces are in contact
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