Miter Saw Protractor, 7-Inch Professional Miter Saw Protractor Angle Finder, Featuring Precision Laser-Inside & Outside Miter Angle Finder for Carpenters,Plumbers and All Building Trades (Yellow)

probably works well if you have a degree in geometry

Other people are charging 28 bucks for this same product. The numbers aren't hard to read like some have said if you need glasses to read a book then you probably will need them to read this tool. Another review states that they think the numbers will wipe off I don't think they will you can definitely feel a texture when you glide your fingers over them so I don't think they're going anywhere.

I wish it was a little bit longer.

I was looking for another version of this tool I saw on a YouTube video but this is one is fine. it does what it is supposed to do and it wasn't overly expensive.

I use this tool a lot. Accurate for measuring inside and outside corners. I use it to set my miter and table saw blades up. Easy to read and holds its set position well. I would definitely buy again!

very accurate and easy to use!

Easy to use

Something anyone with a miter saw needs!