Guitar tuning mechanisms, or simply tuners, for the species of instrument on these pages run from the open worm Delaruelle make, simple but often very attractive, especially the lemony lozenge type, through the standard SB (Salvatore Billardi) tuners, where the worm or cog is held in a grease packed casing, the 1950s chrome SBs, to the Busato and Selmer tuners, rarer than hen’s teeth, but a lot more efficient. I have some tailpieces to show here as well. The best tuners are in place on the instruments themselves. The chrome Busato tuners on the Busato jazz are well worth a look. You can see them in place by pausing the photographs of the instruments elsewhere on these pages. These are tuners to beguile even the idlest eye.