General Studies · Measuring Instruments
What is meant by 'best wire' when measuring pitch diameter with a screw thread micrometer or three-wire method?
- 1The wire that touches the thread groove exactly near the pitch line✓
- 2The wire that completely fills the depth between the threads
- 3The wire whose tensile strength and hardness are maximum
- 4The wire that has a polished or glowing outer surface
Correct answer
The wire that touches the thread groove exactly near the pitch line
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