Recent Blogs
Great Curve Delineator Mechanism: How It Works, Diagram, Parts, Formula and Uses
The Great Curve Delineator draws large-radius arcs without a centre point. Used by shipwrights, naval architects and pattern lofts. Geometry, formula, examples.
Trammel for Drawing Ellipses: How the Archimedes Mechanism Works, Parts and Uses
How a Trammel of Archimedes draws true ellipses for pattern-makers, sign carvers and toolmakers. Geometry, formula, worked example and tolerance rules.
Ellipsograph Turntable Mechanism: How It Works, Parts, Formula and Diagram Explained
How an Ellipsograph Turntable draws true ellipses for draughtsmen, jewellers and pattern-makers — geometry, formula, worked example, and selection trade-offs.