Mahr Federal, 4173050, 55deg Whitworth Thread Interchangeable V-Type Anvil for Micrometers and Gauges, 4.5 - 3 Pitch Range (TPI)
55deg Whitworth Thread Interchangeable V-Type Anvil for Micrometers and Gauges, 4.5 - 3 Pitch Range (TPI)
For pitch, root and outside diameters. Hardened, wear-resistant special steel. With cylindrical mounting shank and retainer ring which ensures locking while permitting rotation in bore of spindle and anvil.
