Contact Tachometer Surface Speed Meter 2235A


5 digits 18mm (0.6") lcd
accuracy: ±(0.05%+1 digit)
sampling time: 0.5sec(over 120rpm)
range select: auto-ranging
memory: max. value, min. value, last value
test range: 6mhz quartz crystal
power consumption: approx 45ma
time base: 6mhz quartz crystal
time base accuracy: 10x10-6(0~50°c)
measurement:
contact tach: 0.5~19,999rpm
surface speed: 0.05~1,999,9m/min
surface speed: 0.2~6,560ft/min
resolution: 
contact tach: 
0.1rpm(0.5~999.9rpm)
1rpm(over 1,000rpm)
surface speed: 
0.01m/min(0.05~99.99m/min)
0.1m/min(over 100m/min)
surface speed: 
0.1ft/min(0.1~999.9ft/min)
1ft/min(over 1,000ft/min)
battery: 4x1.5v aa battery