Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune represents the ultimate fusion of elegant vintage design, accurate tuning stability, and velvet-smooth performance. Built as an open-gear tuner with precision threaded worm gear engineering, it sets a refined standard for classic instrument tuning.
Featuring an 18:1 gear ratio, it provides unmatched tuning accuracy and long-term durability. The design eliminates synthetic polymer coatings to ensure maximum resonance transfer and completely wear-free mechanical interaction across your instrument's lifespan.
Crafted to standard industry dimensions for effortless installation and replacement, each unit features permanently locked and sealed screw joints alongside countersunk mounting holes for a secure fit and optimal tonal transmission.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| SKU | 10510171.44.30 |
| Gear Ratio | 1:18 |
| Weight per Unit | 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 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Mounting Screws Included | 2 x M2.2 x 11 countersunk screws |
| Bushing Outer Diameter | 0.35 in (hexagonal press-in bushing) |
| Bushing Inner Diameter | 0.24 in (suits 0.24 in string post) |
| Product Weight | 0.11 lb |
