Cast aluminium with raised imperial graduations. Lipped edge for secure locating. For use as a framing/tri/mitre square, saw guide and protractor for fast, accurate layout and cutting of angles on rafters, bracing and trim. Weight 134g. Dimensions: 185 x 182 x 258mm. Cast aluminium with raised imperial graduations. Lipped edge for secure locating. For use as a framing/tri/mitre square, saw guide and protractor for fast, accurate layout and cutting of angles on rafters, bracing and trim. Weight 134g. Dimensions: 185 x 182 x 258mm.