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Music Nomad MN820 Tri-Beam 3 in 1 Straight Edge, SAE/Metric & Scale Length Ruler

IN STOCK - Ships today if ordered before 1pm AEST

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Product Information

Diagnosing how level your frets and fingerboard has never been easier with Music Nomad's patent pending Tri-Beam Straight Edge. Creating a new higher standard, our unique 3 wall triangle design gives you the 3 critical lengths 17.6" (44.7cm), 12" (30.5cm), 6.5" (16.5cm) to isolate and identify global or localized fret and fingerboard issues up and down the neck.


  • Our patent pending 3 'n 1 precision straight edge sets a new higher standard. Its unique triangle 3 wall design is easy to hold, flex-free and includes the critical straightedge sizes of 17.6" (44.7cm), 12" (30.5cm) and 6.5" (16.5cm) in one Tri-Beam tool. No other product has 3 Straight edges in 1.
  • Specifically designed for Luthiers and DIY'ers, it helps check if the frets and fingerboard are level when diagnosing playability issues.
  • Includes SAE and Metric rulers for quick measurements, plus 13 of the most popular guitar and bass fret scale lengths so you can quickly check the scale of any guitar or bass on your bench. Additionally, from the 12th fret, you can quickly check the approximate bridge placement using the fret scale length ruler. The scale length ruler also helps determine which Music Nomad Fret Shield (sold separately) to buy.
  • Designed by our Sonoma, CA (USA) team, the premium quality 6063-T5 Aluminum has a blue anodized finish that is extremely durable, abrasion resistant and does not peel or chip. Imprecision is eliminated through single setup, continuous 5-axis CNC producing flawless features on all surfaces of our innovative profile. Convenient hang hole included.
  • All 3 straight edges are precision ground and lapped to ensure smooth flat edges within an accuracy tolerance of +/-.00125"/ft.


Shipping & Delivery

All orders over $100 will be automatically eligible for FREE Shipping Australia Wide, if you order is under $100 there will be a flat rate of $10.

Belfield Music is well known for its top online customer service. We treat all online customers with the same excellent service we give to our in store customer. We will ensure that you receive all the support you need while your goods are in transit and ensure the goods arrive promptly. All of our shipments have tracking numbers available and we cover every single unit by our own shipping insurance.     

Online orders are normally processed within 1-3 business days. Once processed, your order should take between 1-8 business days to arrive depending on your location. Please note that your order may take up to 10 business days to arrive from the day you place your order. 

If it transpires that the product is out of stock due to a stock discrepancy and/or there will be a delay in shipment, we will contact you within 2 business days of placing your order and give you the option of waiting or cancelling your order. The products we advertise online should show if they are in stock or not. We do our best to keep the website stock count up to date, but there may be an occasional error.

If you wish to utilize an Express Delivery Service to receive your item, please contact us for a shipping quote before you place your order at admin@belfieldmusic.com.au or by using the Chat icon on the bottom right of the page.           

Deliver is made during the hours from 8:00am till 5:30pm Monday to Friday. As such, please ensure you nominate an address which is capable of receiving goods during 8am and 5.30pm.  Given the restrictions on PO Box deliveries we cannot deliver larger sized items to a PO Box.

If for any reason our selected carriers don't service your area we will contact you before processing your order if this applys to you.

Returns Policy

If you wish to return an item which is not damaged or faulty in any way and you have simply changed your mind or made the wrong decision, you must let us know within 7 days of receiving the item.  We will not agree to refund an item because you simply changed your mind or made the wrong decision if we have not been advised of your intention within 7 days of receiving your item. Once we have provided a return authority, it is the buyer’s responsibility to return the item, at their own costs within 30 days from original purchase. If the item is returned with any damage or alteration to its original packaging, we will refund the item subject to applying a minimum 15% restocking fee.  We will not refund the costs of the initial shipping charges.

It is in Belfield Music best interests to keep our customers happy with their purchases. If you are not happy with your purchase, please talk to us first. We will always attempt to resolve any problems you may have as best we can. To contact us please email us at admin@belfieldmusic.com.au or by using the Chat icon on the bottom right of the page.