Draper 150mm try and mitre square draper 18952 this try square features a triple brass pinned steel blade for years of reliably accurate use the polished steel blade is graduated in both mm and 1 16 of an inch on both sides and clearly marked the matt black metal stock has carefully machined faces and incorporates a built in spirit level br br this mitre square is perfect for checking corners and edges and used to mark off angles of 45 deg 90 deg and 135 deg angles and is ideally