Speed Detector/Micron Speed Detector Model: RT-HPW2 Dental Handpiece Speed Detector Made in Japan Revolution and frequency measuring instrument Measurement Ranges: Revolution:5krpm to 999krpm Frequency:1 Hz to 200KHz Revolution detecting method:induction power pick-up system Display:Decimal numeration 4-digit LCD Power Source:2 SR-44 silver oxide button cells Dimensions:76*117*18mm Weight:about 120g (incl.2SR-44 button cells)
