The stanley box beam level in the 48 120cm length gives you extra reach for longer spans. It is a good fit for checking doorways, windows, worktops and wider fixtures, where a shorter level would need repositioning. Central and vertical vials cover a wide variety of applications, and the enlarged central vial offers greater visibility from a distance. Machined edges and a 0.5 Mm m main surface support optimal accuracy, while the tough aluminium profile and resistant end caps help it withstand site conditions. Supplied as 1 x stanley stht41048 box beam level 120cm. Features and benefits: central and vertical vials for a wide variety of applications enlarged central vial for greater visibility and legibility machined edges for optimal accuracy robust aluminium profile for long-lasting performance seamless marking, continuous edge for uninterrupted lines specifications: length: 48 120cm no. Vials: 3 level type: box smooth accuracy mm m : 0.5