PMC Mercury N.P.S.F. and N.P.S.M. Straight Pipe Gages are furnished to thread specifications which are in agreement with the ANSI/ASME dimensions as shown below. Available in plug and ring gages.
Our Handbook is the number one resource for everything you need to know about Thread Measuring Wires and is a great reference guide for any shop or laboratory. Tables, specifications and examples of gears including external gear, internal gear with varying pressure angles are referenced in the Handbook.