Digital Contact Tachometer /Digital Tachometer  

Display:            5 digits, 31mm  LCDTest Range:         2.5 to 19,999 RPM (r/min)Resolution:         0.1 RPM (2.5 to 999.9 RPM)                    1 RPM (over 1,000 RPM)Accuracy:           ±(0.05%+1 digit)Sampling Time:      0.8 sec. (over 60 RPM)Test Range Select:  AutomaticBattery:            3×1.5V  UM-3Power Consumption:  Approx. 35mA Operation Temp.:    0 to 50 (32 to 122)Memory:             Max. Value, Min. Value, Last Value.Size:               195×76×40mm

2235B Digital Contact Tachometer