Ornamental turning patterns from the book shown as faint white lines on a black background
https://files.mastodon.social/media_attachments/files/113/515/756/400/190/880/original/c307cb0ef011a956.jpeg
Fascinating piece on @publicdomainrev on the *fancy* turning machines of the 1800s and how they were used to make Spirograph like patterns in metal https://publicdomainreview.org/collection/fancy-turning/
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