Observed arrival · 2026-11-01
Measure & Number: geometry made with compass and straightedge
An illustrated geometry resource that lets visitors work through compass-and-straightedge constructions alongside their history and sources.
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✦Pretty
●Pro
◎Niche
◉Human
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ƒJS
- For
- Geometry learners and readers of architectural history
- Worth noticing
- Plates distinguish exact, constructed, and approximate methods, measuring the gap when no exact construction exists.
Field notes
The source notes distinguish documented methods from the site's own reconstructions, including where historical treatises name shapes but give no working. The collection also measures errors in figures from a workshop booklet attributed to Mathes Roriczer, rather than presenting every historical construction as exact. Other named references include Villard de Honnecourt and Albrecht Dürer.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue