Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines stylish vintage design with precise tuning behavior and velvet-smooth performance. It represents a perfected classic open-gear tuning machine featuring an open gear and worm screw design.
A precise 1:18 gear ratio provides unsurpassed accuracy and durability for exacting instrument tuning. Ultra-precise contact surfaces without synthetic polymer coatings ensure ideal stick-slip performance and maximum acoustic resonance without wear or aging.
Engineered to standard instrument dimensions for straightforward installation and replacement, each tuner features permanently locked, sealed screw joints and countersunk screw holes for reliable hold and optimum sound transmission.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
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 press-in bushing
Button Dimensions (W x H x D)
0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Product Weight
0.11 lb
Design
Open-gear vintage design
Included Hardware
2 countersunk mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (8.8 mm outer diameter, 6.1 mm inner diameter for solid headstocks)