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Home : Fretting supplies : Measuring : Fret Scale Rule

Layout fretboards accurately

Fret Scale Rule

12 useful scales on 3 stainless steel rules
Determine correct fret spacings with our accurate, high quality 22" x 1-1/4" x .030" rules, crafted of durable stainless steel for years of service in professional repair shops.

Each rule is sold individually, or SAVE when you buy the set of all three.

See details below
Fret Scale Rule
Item# Description In stock Price Quantity
0800 Gibson guitar rule Yes $29.95
0801 Fender / PRS / classical rule Yes $29.95
0802 Martin / mandolin / banjo rule Yes $29.95
0806 All three rules SAVE $9.90 Yes $79.95

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Each rule has four different fret scales, and features precisely etched, easy-to-read markings on both sides.

#0800 Gibson guitar rule
This rule includes Gibson's long scale and three shorter Gibson scales. The three shorter scales are different lengths, but over the years Gibson has referred to all of them as 24-3/4". For more detailed information, see stewmac.com/fretscales
    • 24.562" Gibson (24-9/16")
    • 24.625" Gibson (24-5/8")
    • 24.750" Gibson (24-3/4")
    • 25.300" Gibson long

#0801 Fender / PRS / classical rule
    • 25.5" Fender
    • 25" PRS / Dobro® / National™ / Benedetto
    • 650mm classical
    • 660mm classical

#0802 Martin / mandolin / banjo rule
    • 24.900" Martin short
    • 25.340" Martin long*
    • 13-7/8" mandolin
    • 26-3/16" banjo
*Martin long scale: The scale used on Martin Dreadnoughts is commonly referred to as 25.4" but is actually 25.34".
Before working on any vintage guitar, I always check fret accuracy with these rules.
Dan Erlewine



Shown on page 13 of our latest catalog.

Dobro® is a registered trademark of Gibson Guitar Corporation.

National™ is a registered trademark of National Reso-Phonic Company.

Paul Reed Smith® and PRS® are trademarks of Paul Reed Smith Guitars.

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