RPM Meter (Tachometer) for turntables. Do you need a quick and easy to use tachometer to measure the actual RPM of your turntable? No problem, here it is. Simply place the phone on your turntable and you are ready to go! Measuers: Min RPM Max RPM Avr RPM Percentage RPM Discrapency Wow and Futter No fuss RPM meter. Does what it says on the tin.
