Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with precise tuning response and smooth operation. Designed as a perfected open-gear tuning machine, it features exposed gearwork and a precision worm gear mechanism.
A 1:18 gear ratio provides ultra-precise tuning stability and long-lasting durability. The absence of synthetic coatings allows for optimal acoustic resonance across your instrument's headstock.
Engineered with permanently locked, sealed, and covered screw joints, these tuning machines ensure zero maintenance and wear-free performance across years of playing.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 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) |
| Mounting Screw Size | M2.2 x 11 mm |
| Press-In Bushing Outer Diameter | 0.35 in (8.8 mm) |
| Press-In Bushing Inner Diameter | 0.24 in (6.1 mm) |
| Weight | 0.11 lb |





















