Ruler Triangle - 30 Cm - Scale Ratios 1 20 To 1 500 - Plastic - For Architecture Engineering Drafting - 2 Pieces

Professional triangular ruler set designed for architectural drafting, engineering plans and technical drawing — ideal for precise scale conversion and layout work.
Features two complementary ruler triangle units with full metric scaling.Durable plastic construction ensures long-term rigidity and resistance to bending or warping — maintains accuracy even with daily use in studio or classroom environments.Precisely engraved scales with clear, high-contrast numbering (1:20 to 1:500) enable quick, error-free reading — no smudging or fading over time.Optimized for architects, engineers, students and teachers — compact 30 cm size fits standard drawing boards and portable kits, suitable for both academic and professional settings.Package includes: ruler triangle ×2 (each 30 cm, with complementary scale sets), no additional accessories — ready to use out of the box.This set includes two 30 cm triangular rulers made of rigid, transparent plastic, each engraved with a full range of standard architectural scale ratios: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125, 1:200, 1:250, 1:300, 1:400 and 1:500. The rulers are lightweight yet dimensionally stable, with sharp-edged bevels for clean line drawing and accurate alignment. Ideal for hand-drafting floor plans, elevations, sections and detail drawings. Clean with a soft dry cloth after use; store flat to preserve calibration. Not intended for laser cutting or high-heat environments.