Tonometer
National Museum of American History

Tonometer

Unknown artist

overall; tonometer: 38 1/2 in x 50 1/4 in x 24 1/2 in; 97.79 cm x 127.635 cm x 62.23 cm
National Museum of American History
CC0 — Public Domain
National Museum of American History

Rudolph Koenig (1832-1901), the leading acoustic instrument maker of his era, attended school in the Prussian city of Konigsberg and apprenticed with a French violin maker before opening his own shop in Paris in the late 1850s. Many Americans learned of his work through his extensive display at the Centennial Exhibition held in Philadelphia in 1876.

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