Dt-6236b Digital Laser and Contact Tachometer

Display: 5 digits, 31mm blue backing LCD display Test Range: PHOTO TACH: 2.5 to 99, 999RPMCONTACT TACH: 0.5 to 19, 999RPMSURFACE SPEED: 0.05 to 1999.9m/minResolution: PHOTO TACH: 0.1RPM (2.5 to 999.9 RPM)1RPM (over 1000 RPM)CONTACT TCAH: 0.1RPM (0.5 to 999.9 RPM)1RPM (over 1000 RPM)SURFACE SPEED: 0.01m/min (0.05 to 99.99m/min)0.1m/min (over 100m/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-3 battery or to connect the DC 6V Regulated power supplyPower Consumption: Approx. 50mA Operation Temp.: 0 to 50C(32 to 122F)