D'Addario DADDARIO Clip-on Tuner for Viola PW-CT-25 The Micro Viola Tuner, with its compact design and highly visible full-color display, securely attaches to the viola with a lever-lock clamp that won't damage the instrument, and is easily attached and detached. In addition to its precision, which is ideal for tuning, it also features a unique mounting system and fast pitch response, making it an effective practice tool to help with intonation reference and improvement during performance. Improved Micro Violin Tuner for larger viola bodies Padded mount to match standard viola sizes and full-size violins Full-color display Easy-to-use lever-lock clamp Calibration range: 410-480Hz Body thickness: Compatible with 41mm or more I tried it once, but it's difficult for me to see due to my glasses' focus (adjusted to the music stand distance), so I'm putting it up for sale. Arrived today (12/24), used only once. Please note that the instruction manual was not included from the beginning. Thank you. #Viola #Viola #StringedInstrument #Strings #Tuner