Mitutoyo 1044A Dial Indicator 0.01mm-5mm, The Mitutoyo “A” Series Dial Indicators have scratch resistant, anti-glare coated crystals just like our popular Test Indicators. They also have a standardized stop screw thread to M2.5x0.45, increased mounting stem length*, a redesigned spindle for waterproof models allowing for additional contact points to be used, a tapered hand/pointer base which makes repairs easier when needed, tolerance clips are now optional, a change in stop screw shape*, and the bezel and dust cap colors are black.