A MacKenzie-Lewis polygraph, made by The Cambridge and Paul Instrument Co. Ltd, England , number 3776, with driving clock, glycerine pelotte, aluminium caps, pens, paper and ink jar ( rubber diaphragms missing ), contained in the original wooden case with instructions for use on the inside of the lid -- 8 5/8in. (21.9cm.) long
A MacKenzie-Lewis polygraph, made by The Cambridge and Paul Instrument Co. Ltd, England , number 3776, with driving clock, glycerine pelotte, aluminium caps, pens, paper and ink jar ( rubber diaphragms missing ), contained in the original wooden case with instructions for use on the inside of the lid -- 8 5/8in. (21.9cm.) long
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