An industrial lathe for cutting screw threads: from the side (upper figure) and from above (lower figure). Lithograph by Mackay & Kirkwood, 1860.

Date:
[1860]
Reference:
46077i

Licence: Public Domain Mark

Credit: An industrial lathe for cutting screw threads: from the side (upper figure) and from above (lower figure). Lithograph by Mackay & Kirkwood, 1860. Wellcome Collection. Source: Wellcome Collection.

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