With its stunning appearance the Schaller Da Vinci™ bass tuner opens up a fresh and original dimension to guitar tuning and tuner design. While the Da Vinci™‘s unique window – specially hardened and UV-resistant – lets you enjoy the beauty of design and functionality, it also protects the precious inner workings from environmental influences making your Schaller Da Vinci™ a true gem and a long lasting investment. The Da Vinci™ is a state-of-the-art tuning machine featuring flawless construction, ultra smooth action and unparalleled tuning stability. Built with the legendary Schaller quality of materials and workmanship, the transparent cover plate is made of a specially developed high-quality scratch-proof polycarbonate that is also resistant to chemical cleaning agents. It is also resistant to UV light and to extreme temperature changes. The worm gear has been completely redesigned to provide previously unknown tuning precision in a machine head of this type. Featuring a new surface, this tunehead provides the same delicate fine tuning normally associated with enclosed greased machine heads. Extensive research on new materials and optimized geometries means the Schaller Da Vinci™ tuning gears produce superior performance without grease. Another benefit of these measures is the greatly improved sound transmission and frequency coupling to the headstock. In addition, the absence of grease along with the light polycarbonate window replacing the metal cover helps to reduce overall weight. This makes the Da Vinci™ not just a true style icon but a highly advanced and musical tuning machine.