Dan Armstrong guitars had a nifty system for this, which goes back years. https://farm4.static.flickr.com/3130/2319685814_b648ce0118.jpg?v=0 https://farm4.stat

Dan Armstrong guitars had a nifty system for this, which goes back years. https://farm4.static.flickr.com/3130/2319685814_b648ce0118.jpg?v=0 https://farm4.static.flickr.com/3130/2319685814_b648ce0118.j... https://cdn.mos.musicradar.com/images/Product%20News/Guitar/Oct08/ampeg%20first%20look/ampeg-front-460-100-460-70.jpg https://cdn.mos.musicradar.com/images/Product%20News/Guitar/...