Articles by Mike Oddy

External thread inspection can seem confusing and, in some cases, frustrating. There is a wide variety of inspection tools available for external threads.

How do you measure an internal thread on a part? How do you decide what you need?

The measurement of a drilled, reamed or formed hole depth may be inspected in a wide variety of methods. 

Working thread plug gages are the fixed limit functional gages used to inspect product threads on a pass/fail basis.

The use of the go/no-go fixed limit gage is considered one of the simplest forms of pass/fail attribute inspection.