Dt-2235A Digital Tachometers Meter

Display: 5 digits, 31mm LCDTest Range: CONTACT TACH: 0.5 to 19, 999RPMSURFACE SPEED: 0.05 to 1999.9m/min0.2 to 6, 560ft/minResolution: CONTACT TACH: 0.1RPM (0.5 to 999.9RPM)1RPM (over 1000RPM)SURFACE SPEED: 0.01m/min (0.05 to 99.99m/min)0.1m/min(over 100m/min)0.1ft/min (0.1 to 999.9 ft/min)1ft/min (over 1000 ft/min)Accuracy: ± (0.05% +1 digit)Sampling Time: 0.8 sec. (over 60 RPM)Test Range Select: AutomaticMemory: Max. Value, Min. Value, Last Value. Battery: 4× 1.5V UM-3Power Consumption: Approx. 45mA Operation Temp.: 0 to 50C(32 to 122F)Size: 195× 76× 40mm