The Mitutoyo 543-507B, ID-S1012ESB Absolute Solar Digimatic Indicator has a measuring range of 0.5"/12.7mm, .0005"/ 0.01mm Resolution with a 3/8" Stem diameter and a Flat back. Provided with SPC output, IP42 level of protection from dust and water and has two large buttons (three on inch/mm models) that improve the functionality. Features the unique Absolute sensor technology that automatically restores the last origin position when the indicator is turned on. This allows quick-start operation, which is especially useful in multi-point measurement. This is a measurement tools with a solar power source making it ready for use from 40 lux illumination, is as compact as Series 2 dial indicators.