Guitar Luthier Radius Gauge Kit With String Action Ruler Set

You will eliminate fret buzz and maintain perfect intonation by fitting this stainless steel guitar luthier radius gauge kit directly onto your instrument’s frets.

• Drop the nine included T-shaped rulers onto your fingerboard to instantly read common radii like 7.25, 10, 12, and 20 inches from above or below the strings.
• Slide the matching string action ruler between the frets and strings to measure clearance and set precise bridge saddle heights for every gauge.
• Apply these calibrated tools to electric guitars, acoustics, basses, and banjos to take control of neck setup and prevent costly pro-setup charges.
• Rely on precision-ground stainless steel that holds its shape over years of workbench use, ensuring repeatable measurements for consistent tone and playability.