I can't speak to the absolute accuracy of this mini level, but it's great for setting up knife sharpening angles. The device can be prone to calibration drift over time!

This review is for the Gem Red 82413 model.Although I needed two, I ordered one of these digital levels to check it out before ordering the second. I was pleasantly surprised with the quality of this level. I checked it for accuracy right off the bat using some known good high quality bubble levels for comparison. It passed my initial accuracy tests with flying colors.Ordering the second unit was a no-brainer.When I received the second unit I again did an accuracy test comparing the two to each