The Kapro 4 Piece Mercury Level Set is perfect for every project equiring accurate and reliable measurements. All levels include 2 solid acrylic shockproof vials, displaying both horizontal and vertical readings. These levels feature 33% larger magnified horizontal vials for easier reading. The shock absorbing rubber end caps prevent the level from getting damaged if it is dropped.Contains: 4 x Mercury Levels 20cm, 60cm, 120cm and 180cm.1 x Carry Bag. Specification: Accuracy: 0.5mm/m.