Measuring Range: CONTACT TACH: 0.5-19,999RPM SURFACE SPEED: 0.05-1,999,9m/min Accuracy: +/-(0.05%+1 digit) Time Base: 6MHz CONTACT TACHOMETERSURFACE SPEED METERDT2235A5 digits 18mm (0.6") White backlight LCDAccuracy: ±(0.05%+1 digit)Sampling Time: 0.5sec(over 120RPM)Range Select: Auto-RangingMemory: Max. value, Min. value, Last valueCan store 96s dataPower Consumption: Approx 45mATime Base: 6MHz ...