Model G pH meter cable assembly diagram
Dwg. No. 662-000740
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off rapid development not only of Beckman Instruments, Inc. but also of the electronic scientific instrument industry.
|Creator of work|
|Place of creation|
|View in library catalog|
Rapp, S. “Model G PH Meter Cable Assembly Diagram,” February 8, 1949. Beckman Historical Collection, Box 18, Folder 27. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/d217qq38h.
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