The Stabila 196-2 levels are made from extra strong light metal They have rectangular profile and an extra strong ribbed frame with rubberised hand holds Their removable end caps incorporate anti-slip wall pads which allow the level to be held firmly against a wall with one hand without slipping Each level has 2 vertical vials and 1 horizontal vial The levels have 2 milled measuring surfaces except for the 180cm levels which do not have any milled surfaces Measurement Accuracy in normal position 0029° 05 mmm overhead measurement 0029° 05 mmm