Recent Blogs
Proportion Compasses / Hyperbola Drawing: How the Mechanism Works, Parts, and Drafting Uses
How proportion compasses and hyperbola-drawing linkages work, with the geometry, real shop scenarios, and a worked example for pattern-makers and drafters.
Trolley Car Mechanism Explained: How It Works, DC Circuit Diagram, Parts and Uses
How a trolley car draws power from an overhead wire, drives its traction motors, and moves passengers. Real numbers, named systems, and operator examples.
Eidograph Mechanism Explained: Parallel-Bar Drawing Copier, How It Works, Parts, Formula, Diagram
Eidograph explained — how the pivoted-bar copying mechanism scales drawings, where it beats the pantograph, and how draughtsmen still use it today.
Pantograph Mechanism: How the Four-Bar Parallelogram Linkage Scales and Copies Motion
How a Pantograph linkage scales drawings, engraves nameplates, and copies CNC paths. Geometry, formulas, tolerances, and a worked example for makers and engineers.