Use for repetitive layouts, eliminate mistakes Solid brass, precision-milled Sure-grip thumb screws easily attach to framing Square Ideal for stairs and rafter cuts Durable and economical layout solution The true craftsman's choice, essential for stair builders Works well with most layout squares—try Swanson's TA122, TA126, TS153, TS157, and SVL123 Use as a depth gauge with Swanson t-bevels and Try Square, such as the TS151, TS152, and SVR149, Manufacturer: Swanson Tool