Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single combines refined vintage aesthetics with precise tuning performance and ultra-smooth operation. Designed as an open-gear tuner with a precision worm gear mechanism, it provides an exact 1:18 gear ratio for superior tuning accuracy and lasting durability.
Built without synthetic polymer coatings, its ultra-precise contact surfaces deliver frictionless stick-slip performance and full acoustic resonance. Permanently locked, sealed screw joints ensure wear-free and maintenance-free longevity on your instrument.
Featuring standard dimensions compatible with production instruments, this tuning machine includes countersunk mounting holes for secure attachment and optimal sound transmission.
| Brand | Schaller |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) including bushing |
| Button Dimensions (W x H x D) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Product Weight | 0.1 lb |
| Included Bushing Outer Diameter | 0.3 in |
| Included Bushing Inner Diameter | 0.2 in |
| Mounting Screws | 2 x Countersunk Screws (M2.2 x 11 mm) |





















