DT2236B Digital photo/contact tachometer
Wide measuring range and high resolution,Contact and non-contact two kinds of measurement
Digital display gives exact RPM(surface speed、line length) with no guessing or errors
The last value/max, value/rain, value will be automatically stored in memory and can be displayed by turn anytime
The use of durable, long-lasting components, including a strong, light weight ABS-plastic housing assures maintenance free performance for many years. The housing has been carefully shaped to fit comfortably in either hand