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Comptometer
From the collection of Cooper Hewitt, Smithsonian Design Museum. Free to download, adapt and use — no permission needed.
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Cooper Hewitt, Smithsonian Design Museum’s own descriptionCredit lineComptometer. ca. 1887. Felt and Tarrant Mfg. Co.. Cooper Hewitt, Smithsonian Design Museum, Gift of New York Life Insurance Company. CC0.