The Rumold Reduktionsmassstab Architect 4 is a 30 cm triangular scale rule designed for architects and technical drafters. It enables accurate scaling of measurements across multiple ratios directly from drawings and blueprints.
Six reduction ratios — 1:100, 1:200, 1:250, 1:300, 1:400, and 1:500 — cover the full range of standard architectural scales in a single tool
Faceted edge design provides a stable, non-slip reference surface on drawing surfaces
Dual metric scale with centimetre and millimetre graduations ensures precise measurement at any scale
Compact 30 cm length fits comfortably in a drafting toolkit or pencil case
Das zeichnet den Rumold Reduktionsmassstab aus
Unlike standard rulers that measure only at a 1:1 ratio, this triangular scale rule embeds six common architectural reduction ratios into a single instrument. The faceted edge and white finish provide a clean, visible reference line against dark drawing surfaces.
Ideal für...
Architects, urban planners, and technical drawing professionals who require consistent scaling across multiple plan sizes. The rule is suited for daily use in architectural offices, construction site planning, and educational settings where scale accuracy is essential.
Anwendung von Rumold Reduktionsmassstab
Select the appropriate reduction ratio for the drawing scale in use
Align the faceted edge of the rule with the drawing surface
Read measurements directly in the scaled dimension using the cm/mm graduations
Transfer the scaled measurement to the working drawing or model
Rumold is a Swiss manufacturer of precision measuring instruments and drafting tools, serving architects, engineers, and technical professionals since its founding. The brand is known for durable, well-engineered rules, scales, and geometric tools that meet the exacting standards of architectural and technical drawing workflows.
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