Bubble level or spirit level: simple and accurate.Measure the tilt of your mobile phone on one edge or flat.No more sloping tables nor wrong frames.You can line everything up!Features:- Calibration- Display of the angle values- Hold function- Sound notification at equilibrium- No ADKeywords:Bubble level, spirit level, plumb bob, niveau à bulle, nivelle, wasserwaage, spirito livello, livella, nivel de burbuja, ????????, ????????? ???????, ???, ???, ????, ??, ?????, ??? ?????, ?? ??, szeszes szinten, nível de espírito, poziomica, vattenpass, ??????????????