Mitutoyo Dial Indicator with 0-.5" Range and .0005" Graduations Mitutoyo's dial indicators now offer users more stability and longer life, thanks to advances to the inner workings of the rack and pinion gear system. Features include... 0-.5" Measuring Range .05" Range per Revolution 0.0005" Graduations 0-50 Dial Reading 3/8" Stem Diameter Flat Back