The Faithfull Prestige Tri-Scale Engineer Rule is a professional-grade measuring and scaling tool designed for engineers, architects and technical drawing applications. This precision instrument enables accurate ratio conversion when creating technical drawings, making it essential for design professionals and draughtsmen working on scaled projects. Manufactured from aluminium using CNC machining for exceptional accuracy, this triangular rule features 6 distinct scales with colour-coded inserts for quick identification. The laser engraved graduations ensure outstanding measurement precision, whilst the black anodised finish provides enhanced corrosion protection for long-term durability in professional environments. The unique triangular profile offers a practical safety advantage, keeping fingers away from knife blades when the rule is used for cutting or scoring card and drawing materials. This 300mm engineer rule is ideal for technical drawing, architectural plans and engineering sc