D'Addario Accessories - Micro Violin Tuner PW-CT-14

Features a non-marring, lever-lock clamp that holds the tuner securely to the instrument while allowing easy application and removal.
Built-in piezo transducer picks up instrument’s vibration rather than sound
Tri-color reversible backlit LCD screen makes it easy to tune in dark environments
Wide calibration range (410Hz to 480Hz)