View of a worker using an electric capping stick to cap off and cut a cylinder of glass into a flattening length at an unidentified factory. This photograph is one of a set of seven stereographs detailing the production of glass sheets.
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“Capping off a Cylinder into Flattening Lengths with Electric Capping Stick.” Underwood & Underwood, n.d. Underwood & Underwood Stereographs of Manufacturing Industries. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/rj4304528.
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