Stabila 83S Level Double Plumb is a pressure-cast light metal level has 2 milled measuring surfaces. It is robust and very practical: its 2 handholds make it very comfortable to use. 3 Vials - the horizontal vial can be viewed from 4 sides and the vertical vials from 3 sides. Accuracy: ±0.5mm/m in normal and overhead positions. Ref: UTTK10236