Etched engineering plate: a mine shaft with a water-raising machine, plus three mirror ray diagrams and a small lens sketch.

Mine water-raising engine and optical mirror diagrams, etching, c.1754

A black-and-white etched plate with a cross-section of a mine shaft showing a tall water-raising engine with chain and buckets, beside three optical diagrams of curved mirrors with ray lines. Captions label the figures at top, and a small lens apparatus sits in the lower right corner.

Artist: Thomas Jefferys
Date: [1754]
Medium: Etchings
Source: Wellcome Collection
Size: 2271 × 4000 px

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Public domain · Wellcome Collection marks it Public Domain Mark; made by 1754.
Rights checked 2026-11-05 · tier A · as stated by the source: Public Domain Mark (Wellcome Collection)

Credit (appreciated, not required for public-domain works): Wellcome Collection

18th century engraving technical illustration etching scientific plate optical diagram black and white