General description The Faithfull Prestige Tri-Scale Architect Rule is designed for precision in drawing and measurement. This heavy-duty tool features a unique triangular profile that keeps fingers safe from blades during cutting or scoring tasks. Made from durable aluminium using CNC machining, it has a black anodised finish for enhanced corrosion resistance and laser-engraved scales for outstanding measurement accuracy. It is commonly used to convert ratios with scales in technical drawings. Technical specifications Length: 300mm (12 inches) Scales: 1:5, 1:10, 1:50, 1:100, 1:200, 1:500 Material: Aluminium Finish: Black anodised Manufacturing process: CNC machined Compatibility and accessories Compatible with standard cutting and scoring tools Suitable for use in drafting, engineering, and architectural tasks Installation No installation required; ready to use out of the box. Usage Use for drawing, measuring, and converting ratios in technical drawings Utilise the triangular profile