Multifunction Digital Speedometer Tachometer for Fan, motor AT-137PC

Multifunction Digital speedometer tachometer AT-137PC Product Description The Multifunction Tachometer Used to test the rotative velocity ,surface speed or frequency of motor.Widely applicable to motor, fan, paper-product ,plastics,chemical fiber,washing-machine,automobile,airplane,steamer department etc. Product Feature * digital display with no guessing errors. * Wide measuring range and high resolution. * The last value / max. value / min. value will be automatically