GemRed 82305 Digital Angle Finder Protractor-Stainless steel (white&red button)

This works great and is very easy to use. It is made very well and is durable. I have used it several times in the last few months. It is very accurate. I used my friend's expensive tools to check the angles and they were right on. I have a better angle finder than my friend and it was a lot less money. I really like it and it is dependable.

I like doing pro's and con's to a review so will just dive into it. Pro's This thing is STURDY!! I did not expect it to be as sturdy as it is!! I expected the rulers to be flimsy Easy to use! Zero out on the surface you are going to measure by pressing one button! Easy to read!! Even for my old eyes! The tighten device does not move the angle finder thus screwing up your measurement. Comes with a extra battery! Instructions are easy to follow! Price!! Con's -- These are more a personal preference and do not really distract from the Digital Angle Finder itself Would be nice to have a lighted readout feature. Made in China. All-in-all, I highly recommend this item, despite my 2 con's.

Accurate, repeatable measurements, easy to use and affordable. Seems well made. Serves my needs just fine. Adjustable friction or a locking feature would make it a little better.

Purchased black aluminum model in November of 2024. Love it. If I have a saw out, I also have this out. White markings on black background are easily read, but I rarely use in to measure length. I use mostly for the digital angle readings. This tool gets used frequently to measure a needed angle and to then set saw blades at those angles. It gets used again to return table saw blades back to 90 degrees. I also own a magnetic digital angle finder, but usually prefer this Gemred tool when setting up saw blades. Digital display is easy to read indoors and outdoors. Tool has auto zero button. If you forget to turn it off, it will automatically shut off. I'm still working with original battery, and this tool gets frequent use. It lives in a non-temperature-controlled garage.

Great product and easy to use. Great for determining true angles when installing baseboard and trim

This angle finder is extremely easy to read and use. I tested it on a number of squares I have and most were 89.9 degrees. I did have three (all Empire brand) Carpenter, Tri Square and Combination squares that measured dead-on at 90.0 degrees. My 6 inch economy machinist square was 89.8. I had always thought it to be the gold standard in my shop. Perhaps not. I then drew a triangle (Pythagorean model) with legs of 6 and 8 inches using this digital Protractor. I measured with an accurate metal 12 inch ruler and it was right on at 10 inches. So I am calling it accurate and my machinist square is "not so" accurate. I really like the feature that a long press of the ON/OFF button shuts is down so that movement doesn't wake it. That is a really battery saver idea. I also like that it is metal (aluminum) so heat will not warp it.

Very solid construction with the right price. It looks and feels sturdy on the hands and has very clear visible markings and high contrast screen. The size is just right for hobbyist or even pro builders, and is a lot more efficient and more precise than trying to do it manually by hand without the automatic tool.

I compared two Digital Protractor Angle Finders: GemRed (2 black button version) & "S&F STEAD & FAST". I was hoping for a clear winner to make my decision easy, but I did not get that. Commonalities: Both brands are made in China, use the same battery, & are the same length (400mm, ~15.75 inch when fully opened), same width, same thickness. They both keep the battery in a no-tools-needed, easy to open "drawer" so it's easy to remove the battery to prevent battery drain during storage. I won't be using this every day or even every week, so this feature is important to me. Build Quality: Both rulers are SS (Stainless Steel), but they are different types of SS. The S&F is attracted to magnets and the GemRad is not. (There are over 50 types of SS & some are attracted to magnets.) Since they don't say what types of SS they are, I give the edge to the non-magnetic GemRad. The S&F has thicker sturdier plastic (especially the battery drawer). The GemRed drawer opens a bit too easily (if jolted, the drawer can open & the battery can disconnect). The S&F battery drawer opens stiffly. Finding Angles: As it should be, the GemRed angle ruler is easy to move when the lock knob is loose and it gets stiffer as the knob is tightened. The S&F however, is stiff to move no matter how loose the knob is. That would be a disadvantage when I'm measuring angles of things that flex when I push on them. Turning the S&F knob very tight makes in only a tiny bit stiffer. Ruler: The S&F ruler markings are darker & much easier to read. The metric markings on both brands go from 0 to 400mm. As you might expect, the S&F inch markings go from 0 to 15 & 16/32. Inexplicably, the GemRad imperial markings go from 0 to 7 inches, twice (instead of a continuous 0 to 15.5")! IMO, GemRad fell down on that one. Buttons: A quick press of the GenRad [On/Off] button only turns off the display, while the rest of the electronics continues to invisibly waste the battery (unless I remember to hold the button for 3 seconds). I don't like that. The S&F has 3 buttons & more functionality than the GemRad. The S&F has a [Hold] button, which could be handy in a situation where I can't see the display while measuring some angle. The S&F also has a button to display in degrees & minutes, instead of decimal degrees, but I doubt I'd ever use that feature myself. (The GenRad has some "hints" on their instruction sheet. One is "Never leave it outside in a wet and shiny environment." Another is "Do not use as a weapon to hit people." That seems like good advice -- a rock would make a better weapon.) I went back and forth about which one is better for me. The S&F is better than the GemRad in so many ways; however, I could not get past the S&F angle measure stiffness and non-functional lock knob. Since I plan to use it mainly to measure angles (not as a ruler), the GemRad is slightly better for me. I'll have to remember to use the battery door as my On/Off switch.