Multi-Angle Triangular Woodworking Ruler

A purpose-built triangular ruler for accurate, repeatable angle marking in wood-based trades. Constructed from solid aluminum alloy, it combines light weight (approx. 280 g) with mechanical stability — resisting bending under pencil pressure or repeated scribing. Key dimensions: 12.5 cm legs forming a right angle, with a hypotenuse of 17.7 cm. Engraved markings include primary 45° and 90° references plus secondary angles at 22.5°, 30°, 60°, and 67.5°, each matched to a corresponding 1/4-inch-diameter locating hole. A separate 1/16-inch-diameter hole supports consistent parallel line spacing for dado layouts or hinge mortising. All angles are defined by physical CNC-cut geometry — not approximated via printed scales — ensuring traceable accuracy across the full tool life. The surface finish is smooth but non-reflective, minimising glare during indoor or shaded outdoor use. No coatings, paints, or adhesives are used — only machined bare aluminum for maximum tactile feedback and longevity. Suited for fine furniture makers needing clean mitre transfers, for site carpenters verifying roof pitch templates, and for educators demonstrating geometric relationships — all without requiring electricity, software, or consumables.