Model of a mill, equipped with Christopher Polhems counter. Described in the inventory of 1779 as "Model for calculating, how much is ground in the mill, while abscent. By Mr. Councilor of Commerce Polhem.". The model is numbered "N:o 137
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Details
Title: Mill
Creator: Anna Gerdén
Provenance: Donation by the Royal Institue of Technology, 1925