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Relay Unit for Boas Cardiotachometer
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Relay Unit for Boas Cardiotachometer

Boas, Norman F. · after 1901 · object

From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.

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National Museum of American History’s own description
Subjects
Unit, Relay, CardiotachometerMedicineMedicine and Science: Medicine
Credit lineRelay Unit for Boas Cardiotachometer. after 1901. Boas, Norman F.. National Museum of American History. CC0.
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