I bought a cheap rotary level from eBay, imported from Poland, its red rather than green, but has been completely flawless. We tested it against a Leica, and it was pretty much spot on. Has been used to build a massive deck, and three barns, as well as laying loads of pipes. Been borrowed by a couple of builder friends who were impressed enough to then buy them themselves.
I bought a cheap rotary level from eBay, imported from Poland, its red rather than green, but has been completely flawless. We tested it against a Leica, and it was pretty much spot on. Has been used to build a massive deck, and three barns, as well as laying loads of pipes. Been borrowed by a couple of builder friends who were impressed enough to then buy them themselves.