Detail 01
Ratio gearing
Gear ratios are calibrated by string, so a half turn changes any string by one semitone.

Independent shopping perspective
Graph Tech’s Ratio 3+3 Vintage locking tuners are made for an electric guitar with three machines per side. Their calibrated Ratio gears use different ratios for lower and higher strings, with half a turn of a peg changing any string by one semitone. Each machine locks the string in place once tuned. The set comes with mounting screws, bushings, aluminum mounting plates, and InvisoMatch Standard Mounting Plates for a replacement installation using existing screw holes.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Gear ratios are calibrated by string, so a half turn changes any string by one semitone.
Detail 02
Each machine clamps the string after it is brought to pitch.
Detail 03
Mounting screws, bushings, four aluminum mounting-plate sets, and InvisoMatch Standard Mounting Plates are supplied.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
A half turn of the peg changes any string by one semitone.
Yes. Each tuning machine has a mechanism that clamps the string once it is tuned to pitch.
It includes mounting screws, bushings, four sets of aluminum mounting plates, and InvisoMatch Standard Mounting Plates.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.