Tachometer - RPM measuring has been renewed! Visualize and save RPM data of your rotary devices. Just put your phone on the rotary table and leave the rest to the app. The app uses your phone's IMU sensor to perform calculations. Accuracy of results depends on your phones sensor resolution. Usage areas: - Calibrating motors. - Control revolution values of record player, phonograph, gramophone - Measure revolution per minute for any of rotaty device. Features: - Measure instant RPM value - C