The Fowler 52-401-221-1 Interchangeable Anvil Micrometer has the following specifications:
Fowler's Interchangeable Anvil Micrometers are very
popular in machine and auto repair and for all other
applications requiring a versatile micrometer. The interchangeable micrometers include all anvils and setting standards to be able to measure across the stated range. The 52-401-221-1 interchangeable style allows users to take measurements with the accuracy of a micrometer but do not need to purchase a micrometer for every increment of an inch. Standards
are also included to accurately adjust the required
Ratchet stop ensures better repeatability among users
Positive lever locking clamp assures accurate settings.
Standards are included with each set.
Graduations are microfine on satin chrome for easy reading.
Each anvil is fitted with an adjusting collar to set the overall dimension.
Hammertone blue baked enamel frame.
Spindle thread is hardened and precision ground with microlap finish on carbide tipped measuring faces.
Diameter of measuring face: .256" (0—12") or .295" (12—20")
A wrench is included for fast, easy zero adjustment on the sleeve.