This Sight-O-Tuner by Hale Pre Sanderson Accu-Tuner is a vintage tuner that is perfect for tuning pianos. With its blue color and hale brand, this tuner is a great addition to any piano tech's collection. It was made in the United States and is suitable for all types of pianos. This tuner is a must-have for those who want to ensure that their pianos are always in perfect tune. The model is Accu-Tuner and it comes with a variety of features that make it easy to use. It is a great way to ensure that your piano is always sounding its best.