Abstract: A tuning device includes a pitch extraction device with which the pitch of an input signal is extracted and a deviation detection device with which the deviation of the pitch that has been extracted by the pitch extraction device from a standard pitch is detected. The deviation that has been detected by the deviation detection device is displayed by an indicator of a mechanical meter. The tuning device also includes an ultrasonic motor that drives the indicator. A controller drives the ultrasonic motor in conformance with the deviation that has been detected by the deviation detection device.