With the Cherub Clip Tuner WST-525 you can play an acoustic guitar, bass guitar, violin or ukulele. This guitar tuner has a calibration function. This allows you to vote the root of your instrument between 430 and 450 Hertz. This makes it possible to set the root of your instrument to 432 Hertz. The tiltable screen makes it easy to read whether the tone is clear. You do this by turning the screen so that it is clearly visible.