RPM - the turntable speed accuracy checker.!

Test the RPM and wow/flutter accuracy of your turntable, whether 16, 33 1/3, 45, or 78.RPM is proud to be recommended by Rega Research Ltd, makers of some of the best turntables in the world. See the speed variations, wow/flutter, of your turntable in real time graphics like youve never seen before. The iPhone gyroscope is very accurate, however if you are in any doubt you should calibrate RPM first using a quality turntable of known rpm.