Surveying: a surveyor's level, disassembled (above) and assembled (below). Engraving by H. Mutlow, 1810.

    Date:
    Sept.r 1st 1810
    Reference:
    46698i

    Licence: Public Domain Mark

    Credit: Surveying: a surveyor's level, disassembled (above) and assembled (below). Engraving by H. Mutlow, 1810. Wellcome Collection. Source: Wellcome Collection.

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