The world's first Solar ABS Digimatic Indicator! Ready for use from a 40 Lux illumination, the super capacitor maintains a reserve of about 3.5 hours under low-light conditions. Other features include... 0-.5" / 12.7mm Measuring Range 0.0005" / 0.01mm Resolution Measuring Force: 1.5N or less Lug Back Origin-set +/- Direction inch/mm Stem Diameter: 3/8" Immune to overspeed error SPC Output