- Locking device at both ends of case for locking any leaf or leaves in desired position
- Leaves on all gauges have special narrow design for easy checking of internal threads in nuts (except Whitworth) for checking both V and American National or U.S. Standard threads
- Leaves stamped with number of threads per inch
- Includes locking device, 11-1/2” and 27 pipe thread pitches
- Range - threads per inch is 9 to 40 with 22 leaves
- V, Unified, American National and U.S. Standard - 60° threads
