. Graphite. Pull-down and jigger used in making crucibles (Crossley Machine Company,Trenton, ) The profile or tool is here shown lowered into the mould. Plate Crucibles as removed from the moulds. (Crossley Machine Company,Trenton, ) Plate XLIII.

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Keywords: ., bookauthorcanadami, bookcentury1900, bookdecade1920, bookyear1920