SWANSON T0108 BIG 12 12" ALUMINIUM SPEED ROOFING SQUARE + BLUE BOOK
SWANSON 12" HEAVY GAUGE ALUMINIUM SPEED SQUARE. INCLUDES SWANSON BLUE BOOK. a framing square, try square, mitre square, protractor, saw guide, stair gauge and out-of-square corner angle finder. The Big 12 Speed Square.