THREAD GAUGES:

Introduction:

Thread geometry procedure cannot be used in normal production work

Hence gauges are used where the basis is mating o surfaces.

Thread gauge classification:

First group

Second group

Form of thread gauges:

Plug ring gauges

Ring screw gauges

Caliper screw gauges

Adjustable thread gauges:

The Wick man Adjustable thread gauge

Roller type Adjustable thread gauges.