Aluminium cast body with large top reading vial window for greater visibility and a magnetic base The level has 3 tinted fixed vials plumb, horizontal and 45º which can be replaced if damaged Length. 230mm. (9in) Stanley Magnetic Shockproof Torpedo Level 230mm | STA043511 STANLEY Torpedo Level with a shock resistant, bi-material body and rubber end caps that protect finished work surfaces from damage. Its rigid aluminium frame has a V-groove edge that is ideal for pipework. The magnetic base allows for hands-free operation on metal surfaces. Fitted with 3 vials: horizontal, plumb and 45°.