Spesification:
Power supply : Battery 1.5V, AA ( 4pcs ) Measuring range Rotation speed : Photo mode : 6 ~ 99999RPM Contact mode : 1 ~ 19999RPM Surface speed : 0.1 ~ 1999.9m/min 0.3 ~ 6560ft/min Accuracy : ( 0.05% of reading + 1 digit ) Sampling time : 1 second ( over 60 RPM ) Range selection : automatic
