Starrett 445 Depth Micrometers have a 100mm base and 3.2mm (1/8″) diameter measuring rods.

Reading surfaces have a satin chrome finish that resists rust. Ring-type lock nut for quick and sure locking. Combination ratchet and speeder for uniform pressure and quicker adjustment. Includes protective case.

Starrett Mechanical Depth Micrometer Graduation: .01mm Range: 0-150mm Base Length: 63.5mm