Tri-Beam 3ftn 1 Notched and Precision Straightedge for Guitars

In this review the MusicNomad Tri-Beam 3 'n 1 proves to be a practical, precision tool for guitar techs and serious players who need a reliable way to check fretboard flatness and neck relief. The single biggest reason to buy is its versatile three-sided design: two custom notched straightedges that fit the common scale lengths of many Fender, Gibson and PRS models, plus a 17.6' notch-free edge for direct fret inspection. Built from CNC ground aluminum with a durable blue anodized finish, it feels like a workshop-ready instrument for setup and fretwork.

Key Features

• Three tools in one: Two notched Tri-Beams and one 17.6' notch-free straightedge let you check a wide range of electric and acoustic guitars without swapping tools.
• Coverage for common scale lengths: Custom notches are designed to fit guitars with scale lengths from about 24.625' up to 25.625', so it works with Fender, Gibson and PRS models.
• Longer notch span: The notches cover 17.6' of the fretboard and touch between 22 fret slots, giving a larger inspection area than many competitors.
• Precision ground accuracy: Each edge is machined within a tight tolerance for straightness, which helps when assessing fret crowns and planing high frets.
• Durable build: 6063-T5 aluminum with a blue anodized finish resists abrasion and the triangular three-wall design is rigid and easy to grip.

Who It's For

The Tri-Beam 3 'n 1 is aimed at luthiers, techs and DIY players who perform regular setups, fret leveling or truss rod adjustments and need a single compact tool that covers multiple scale lengths. The precision edges and long notches make it especially useful for anyone doing fretwork on guitars from Fender, Gibson and PRS families.

Players who rarely adjust their instruments or only work on unusual scale lengths outside the 24.625' to 25.625' range should consider a simpler straightedge or a model made for specialty scales. If you need a polished cosmetic gauge rather than a workshop tool, a lighter plastic straightedge may be sufficient.

Pros & Cons

Pros

• Accurately machined edges offer dependable straightness across three useful profiles.
• Versatile notched sizes and a notch-free edge reduce the need for multiple tools.
• Robust 6063-T5 aluminum with blue anodized finish stands up to shop use.

Cons

• The weight and metal construction make it heavier than plastic alternatives, which some users may find less convenient for travel.

Specifications

Brand	MusicNomad
Model	Tri-Beam 3 'n 1 Dual Notched Straightedge
Material	6063-T5 Aluminum, blue anodized
Notch-free edge length	17.6' (44.7cm)
Notch coverage	Covers 17.6' of fretboard touching between 22 fret slots
Scale length fit	Fits guitars ~24.625' to 25.625' scale lengths
Manufacture	Single setup, continuous 5-axis CNC

Our Verdict

The MusicNomad Tri-Beam 3 'n 1 is a sensible purchase for anyone who needs a durable, accurate straightedge that covers most common electric and acoustic scale lengths. Its three functional edges and precision machining make it good value for professional setups and home workshop use, though users who prioritize ultra-light portability may prefer a different material.

Frequently Asked Questions

Will this fit Fender and Gibson necks?
Yes, the notched edges are designed to fit common Fender, Gibson and PRS scale lengths ranging approximately from 24.625' to 25.625'.

Can it be used to check fret flatness as well as neck relief?
Yes, the 17.6' notch-free straightedge is intended for laying across frets to inspect flatness, while the notched edges are useful for measuring neck relief.

Is the finish durable for shop use?
The 6063-T5 aluminum with blue anodized coating is abrasion resistant and made to withstand regular workshop handling.