2) Tune-o-matic bridge for electric guitar

Tune-o-matic bridge with studs and bushings in chrome

The Tune-o-matic bridge consists of  2 adjustable posts, that each have a wheel on a stud that screws into a bushing, which are implanted into the guitar body. And a bar called the bridge, is placed onto and between these posts.

The bar has 6 saddles, one per string. Each saddle has a small groove that matches a string shape, and this is where the guitar strings are placed onto. Each saddle can be adjusted, moving them back or forward with a screw to control intonation.

The Tune-o-matic bridge for electric guitars, was originally designed by Gibson and introduced on the Gibson Les Paul guitar in 1954. It was later accepted as a standard bridge on mostl Gibson electric guitars.