PHOTO TACHOMETER、Speed Measuring Instrum

display: 5 digits 18mm(0.6") lcd
accuracy: ±(0.05%+1 digit)
sampling time: 0.5 sec(over 120rpm)
range se-lect: auto - ranging
memory: last value,max. value,min.value
test range: 2.5 to 99,999rpm(r/min)
power consumption: approx 40ma
time base: 6mhz quartz crystal
battery: 3x1.5v aa battery
resolution: 0.1rpm(2.5 to 999.9rpm)
1rpm(over 1,000rpm)
detecting distance: 50mm~500mm
dimension: 184x76x30mm