The stabila 81 sv rem torpedo levels have 1 plumb and 1 horizontal vial and an additional angle vial either pre set w45 or adjustable w360 to report an angle also includes a special 6 ring vial for marking 1 and 2 slopes ideal for soil or waste pipe installation the level has a strong cast aluminium t profile making it easy to hold the particularly slender trapezoidal bevelled shape makes it suitable for working in cramped spaces the die cast frame has 1 milled measuring face with a v groove and