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Computing Scale
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
Patent model for William H. Phinney, “Improvement in Scales for Showing Weight and Price,” U.S. Patent 106,869 (Aug. 30, 1870). Although the invention was not commercially successful, Phinney would later be hailed as the beginning of an important industry.
National Museum of American History’s own descriptionCredit lineComputing Scale. 1870. Phinney, William H.. National Museum of American History. CC0.
