View of two workers drawing out glass tubing to make chemical apparatus at an unidentified factory. This photograph is one of a set of three stereographs detailing the production of glass tubing and pipettes.
“Drawing out Glass Tubing for Chemical Apparatus.” Underwood & Underwood, n.d. Underwood & Underwood Stereographs of Manufacturing Industries. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/2227mp645.
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