Digital Contact Tachometer,laser tachometer

Specification:

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 50(32 to 122)Size:                205×76×40mm

6236B Digital Laser & Contact Tachometer with Backlight