Engineering: a machine for sifting coffee, front and side elevations. Coloured drawing, 1845, by Simpson.

    Date:
    1845
    Reference:
    46091i

    Licence: Public Domain Mark

    Credit: Engineering: a machine for sifting coffee, front and side elevations. Coloured drawing, 1845, by Simpson. Wellcome Collection. Source: Wellcome Collection.

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