Review on GFNT Four Pack Combo Bubble Level Pack: Optimized for RVs, Tripods, Phonographs, Turntables & More! by Paul Letho

Just got mine and so far it's working fine. The levels come without tape, which is better in my case as the thickness of the tape can affect the level reading. I use these for two folding tables in my mini workshop so I can check if the table is level after extending the front legs, the back of the table is bolted to the wall with a piano hinge. The workshop is somehow exposed to the sun for several hours a day, so I will update when the color of the level starts to fade in a few days.