Insize Outside Micrometer Ratchet Thimble 3206 3206-20 16-20inch 1pc

Interchangeable anvil outside micrometers have a standard micrometer C-shaped jaw and stock, but have anvils that can be changed to accommodate a range of applications. These micrometers are commonly used in machine shops, automotive repair shops, and for applications requiring a single micrometer with a range greater than 1”. Similarly, adjustable-collar micrometers are outside micrometers with an extension anvil collar and included setting standards to accomodate variable measuring lengths within a given range larger than a standard outside micrometer.