Fowler Outside Micrometer with Interchangeable Anvils Fowler's Interchangeable Anvil Micrometers are perfect for use in machine shops and auto repair facilities and for all applications requiring a versatile micrometer. This micrometer is equipped with a series of easily interchangeable anvils to fulfill the ranges listed. The Standards are also included to accurately adjust the required range. Features Include... 6-12" Measuring Range 0.0001" Graduations 0.00024" Accuracy Set includes... 6 Anvils 5 Standards All spindles and anvils micro-lapped for accuracy Carbide measuring faces, ratchet stop Anvils easily reset: positive locking clamp Standards included Furnished in fitted case