Swanson® The Big 12® Speed® Square With Layout Bar Category_Clothing top forward blade lock design

top forward blade lock design makes it easier to lock/unlock the blade

Hard Rubber

interlocking blade sliders so that only 1 blade is extended at a time

Consult with a professional installation expert or a plumber to ensure compliance with all applicable codes

Swanson® The Big 12® Speed® Square With Layout Bar Category_Clothing top forward blade lock designThe Big 12 is seven tools in one: a framing square, try square, miter square, protractor, saw guide, stair gauge and out of square corner angle finder. Its constructed of heavy gauge aluminum alloy and includes the Layout Bar for use in determining out of square corners. Also included are the Swanson Blue Book for roof and stairway layout and Layout Bar with hardware. See how to LAY OUT STAIRS See how to fix OUT OF SQUARE CORNERS Features Heavy gauge