Sunnen G595TM Dial indicator. .01mm grads x .3mm range. Has the Sunnen contact and bezel holder. Flat back. Stem measures .404" OD. This indicator looks brand new and shows no signs prior use. Dial is shaded green +/-.01mm. It is shaded red from .09mm-/11mm. It was made by Mitutoyo in their Chicago factory for Sunnen