TDP719 - 7-Inch Aluminum Speed Layout Square

Professional Grade Layout Tool for Industry

The Techniweld TDP719 7" Aluminum Rafter Angle Square is an essential hand tool designed for precision and durability in both construction and industrial metalworking environments. Manufactured from high-quality cast aluminum, this square is built to withstand the rigors of daily use on job sites, resisting warping, rust, and corrosion that often plague steel or plastic alternatives. Its solid construction ensures that it maintains its 90-degree accuracy even after accidental drops or heavy handling, making it a reliable choice for professional tradespeople.

For industrial applications, this square serves as more than just a framing tool. It is an excellent layout aid for welders and fabricators who need to quickly mark 45-degree and 90-degree angles on stock materials. The thick edge allows the tool to sit securely against the side of a pipe, beam, or plate, providing a stable guide for marking soapstone lines or guiding plasma cutting torches. Unlike plastic squares which can melt or deform near heat, the aluminum body offers better heat resistance, making it suitable for proximity to welding operations.

The TDP719 features deeply molded-in graduations rather than surface-printed ink. This design choice ensures that the measurements—including degrees, common rafter cuts, and hip/valley scales—remain legible for the life of the tool. Whether you are calculating roof pitches or laying out complex miter cuts for a fabrication project, the clear, permanent markings allow for quick and accurate reading without the risk of fading. The matte finish of the aluminum further enhances visibility by reducing glare under bright work lights or direct sunlight.

Compact and lightweight, this 7-inch square fits easily into a tool belt or welding bag. It includes a convenient pivot point that simplifies the process of laying out angles, effectively functioning as a protractor, try square, and miter square all in one. Whether you are framing a structure or fitting up a weldment, the Techniweld TDP719 delivers the versatility and rugged performance required by modern industry standards.