2 in 1 Portable Contact/Photo Laser Tachometer 99,999 RPM

This digital tachometer features Contact and Photo modes for you to easily and accurately measure the RPM of motors and machine parts. It has a wide measurement range, ±0.05% accuracy, and long detecting distance of up to 500mm or 20 inches (at Photo mode). RPMs are measured at a 1 second sampling time and readings are displayed on a large, easy-to-read LCD screen. The portable tachometer is powered by 4 AA batteries with low power consumption to prolong service time.
Features
Microcomputer LSI circuitry provides accuracy to 0.05% and permits readings to a resolution of 0.1 RPM in either photo or contact mode.
Automatically holds last reading for 5 minutes and recalls minimum and maximum readings.
Characters on the 5-digit display reverse direction depending on the measurement mode.
ABS plastic housing ensures long service time.
The fraction of minute sampling time (1sec).
Maximum, Minimum and Last Measured value.
Designed to fit comfortably in your hand.
Includes 3 contact adapters (2 cones, 1 funnel), surface speed wheel, reflective tape and hard carrying case.
Specification
Laser Range 2.5 to 99,999 rpm
Contact Range 0.5 to 19,999 rpm
Surface Speed Range 0.05 to 1,999.9m/min
Laser Resolution 0.1 rpm (2.5~999.9 rpm), 1 rpm (over 1000 rpm)
Contact Resolution 0.1 rpm (0.5~999.9 rpm), 1 rpm (over 1000 rpm)
Surface Speed Resolution 0.01m/min (0.05~99.99m/min); 0.1m/min (over 100m/min)
Accuracy ±(1 digit+0.5% )
Sampling Time 0.8 sec. (over 6 rpm)
Detecting Distance 50 to 500 mm (2 to 20") Laser; 50 to 500mm(2 to 20")LED
Time Base Quartz Crystal
Circuit Exclusive one-chip of micro-computer LSI circuit
Power 4 AA batteries(not included)
Dimensions 21.5L x 6.5W x 3.8H cm
Package Included 1 x Laser/Contact Tachometer, 3 x Contact Adapter(2 cones, 1 funnel), 1 x Surface Speed Wheel, 1 x Reflective Tape, 1 x Hard Carrying Case, 1 x User Manual
Package Size 26L x 13W x 8H cm
Weight 520g