Guitar Neck Notched Straight Edge Luthiers Tool for Gibson Fender and Most of Guitar Fretboard and Frets

Works great I needed one to check the necks on my guitars to see if the truss rod needs to be adjusted, good price a lot cheaper than a stew mac]⁰

Quality product

I used it on my Squier Stratocaster. Made of what seems like cast aluminum. For the price, I can't complain.

Good tool. Helps a lot

The description seems slightly English-impaired, I wasn't getting my hopes up that the product would be perfect. The first thing I did was check both sides of this straight edge against multiple machined straight surfaces. I also checked from each extended tooth to the the back of the straight edge using a digital caliper just to look for imperfections, it measured true to at least +/-1000th of an inch. I say at least because that is the precision of my caliper. I'm not one to white knight for every product I buy but true is true and this product is dead accurate. Some reviewers are using their particle board amplifiers and the top of their glass desk to check this product for true....come on man....you really shouldn't be making modifications to your guitar if you can't discern between a true machined straight edge and a composite box. You can't check a product whose only purpose it to provide a true straight edge against naturally imperfect surfaces. I was happy that the spacing of the teeth allowed me to use this on a Jackson, PRS, G&L Tele and a BC Rich. I'll check more when I get around to them but I don't foresee any issues. On the downside, this product is very thin, coming in at around 3/32 of an inch. While it does stand up on its own, it will not stay stationary while you turn your rod. Not a huge deal but I'm sure the price reflects the surface area. My biggest issue will be keeping it out of harms way in between uses. It has a drilled hole on one side so hanging it above the work bench would be a good idea. Super pleased with the product

Good

Everything is polished relatively smooth and shouldn't harm your fretboard, if you're careful while measuring its relief.

This is a piece of plastic so it's not really flat and shows a bow on a flat surface (granite surface plate). I would assume that some could be more/less bowed since it is plastic and can be influence by the environment while curing. It is flat enough to put on a guitar neck that needs adjustment but it's definitely not precision. The product I received looked like it had been opened, used and returned. The spacing on the frets groves are a little subject but it did fit on a 22 and 24 fret neck.