PLANET WAVES PWCT21 NS CLIP FREE MICRO TUNER Tuner The ultimate in discreet tuning, the NS Micro Clip-Free Tuner features a full-color display and metronome in a housing that blends with the aesthetics of any instrument. The included clip-free mount attaches directly to your instrument’s tuning machine using the existing screw hole (screws included) so your tuner is always at hand and visible only to you. *The Clip Free Tuner is designed to work with tuning machines with screw mounts Clip Free mount screws directly into 1 tuning machine screw hole. No additional holes needed and the necessary screws are included The Tuners 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 while allowing mounting in front or behind headstock Wide calibration range (410Hz to 480Hz) and visual metronome Tunes acoustic and electric guitars, basses, mandolins, banjos and other stringed instruments