VIOLIN CHIN REST
A chinrest is a shaped piece of wood (or plastic) attached to the body of a violin or a viola to aid in the positioning of the player's jaw or chin on the instrument. The chinrest may be made of ebony, rosewood, boxwood, or plastic. The chinrest is attached to the instrument by one or two metal clamps that hook over the edge of the back. Two bottlescrews comprise the main parts of the clamp or clamps and provide slight tension to hold the chinrest in place.