It works. Is it accurate? Hell I dunno. That’s why I bought it hoping it would be accurate it’s not like I have a lab. Longevity? Dunno. Only had a cpl weeks. Does it do wot I want. Yes. It measures degrees of slope.
Pros
The GemRed XLB Digital Angle Gauge Level is incredibly easy to use, making it an ideal tool for professionals and beginners alike
Cons
The product can be prone to inaccuracies caused by variations in electrical current
I really like this tool! instructions are only in English that''s a plus. The only thing that would be better would be a place to store the battery in the case out side of the unit. Its not a big thing, I just put the battery lose in the bottom. I know if its dose not get used or check battery can corrode.