Equipped with 3 spirit vials, horizontally (180°), vertically (90°), and at an angle (45°).Aluminium frame construction to reinforced and prevent warping.And built-in strong magnets for added stability on metal surfaces.With two precision-milled measuring surface on both sides.Plus heavy-duty, shock-absorbing rubber end caps. Specifications: Model no: TMT26086M Material Frame: Aluminium Length 60cm Thickness 1.5mm 2 pcs powerful magnets double side milled 0.5mm/m accurate vials double flat surfaces design packed by color sleeve