Abstract: An adjustable saddle mechanism for a guitar string comprises upper and lower saddle elements. A compound lever system is provided to lock the saddle elements in any one of an infinite number of positions.

Abstract: A standard guitar or bass guitar, and method, in which a combination worm wheel and ratchet wheel is combined with a combination worm element and pawl element. The result is highly efficient coarse tuning and fine tuning of a guitar string. In accordance with another invention, an adjustable saddle mechanism is provided for a guitar string. It comprises upper and lower saddle elements. A compound lever system is provided to lock the saddle elements in any one of an infinite number of positions.

Abstract: Located on the body as distinguished from the headstock of an instrument such as a guitar is a combined bridge, string lock and fine tuner. The upper end of each string is attached to the headstock. The lower end is fixed to a ratchet thumbwheel rotatable on a transverse axle mounted in a body fixed to the instrument. By turning the ratchet wheel a rough adjustment of string tension is made. A fine tuning knob controls the pawl of the ratchet for precise turning of the ratchet wheel. A slide is longitudinally adjustable in a groove in the upper end of the body. A screw is threaded into the slider and formed with a slot for the string. The screw stops the vibrating length of string.