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Mechanical alphabet

Anna Gerdén

National Museum of Science and Technology

National Museum of Science and Technology
Stockholm, Sweden

Model in the Polhem's mechanical alphabet. The locking wheel is held in continuous rotation by means of a lever with two hooks. The lower lever, which has only one hook and a lock, causes a discontinous rotation. The model is numbered "XXXVII, XXXVIII".

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National Museum of Science and Technology

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