A tool or instrument used for making anaglyphic engravings or carvings, or a device that reproduces relief patterns mechanically.
From anaglyptic + -graph (from Greek graphein, to write or draw), meaning a tool or device for making or reproducing anaglyphic designs.
Before computers, inventors created mechanical devices called anaglyptographs to automatically reproduce detailed relief patterns—basically the original 3D printing technology for ornamental designs.
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