CHROMATIC CALIPER TUNER Korg Pitchclip caliper tuner. Used and loved by musicians around the world, the Korg caliper tuners have earned a place as standard equipment for the modern guitarist. The compact, affordable and easy-to-use pitchclip is the latest addition to Korg's popular Clip-on family. Simple and easy to use, the pitchclip offers high-precision tuning, fast, ultra-sensitive results, and excellent visibility. Pitchclip is the best choice for all guitar or bass players who want fast, accurate and worry-free tuning.