This Tailor made 'ZECO" TUBULAR Outside Micrometer has a Precision Ground spindle, hardened throughout. Measuring Faces CARBIDE TIPPED with Ratchet stop which  is very light in weight. It has a quick zero setting and an anvil side designed for the accommodation of  interchangeable anvils. This anvil is moveable in the sleeve of the frame and can be locked in 4 different stages as & when required.