MEASUREMENT OF VARIOUS ELEMENTS O THREAD

Measurement of major diameter:

  Micrometer

  Bench micrometer

Measurement of minor diameter:

  Using taper paralles

  Using rollers

Measurement of effective diameter:

  Thread micrometer method

  One wire method

  Two wire method

  Three wire method

Pitch measurement:

1.   Pitch measuring machine

2.   Tool maker‟s microscope

3.   Screw pitch gauge

Thread form and flank angle measurement:

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