Wide measuring range & high resolution
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.