Set of twelve tuning-forks, with resonance-boxes, Ut2 Ut3, Mi3, Sol3, La3, Ut4, Mi4, Sol4, seventh harmonic of Ut2, Ut5, Re5, Mi5. By Koenig, Paris Note that the photograph shows only 11 forks, the 12th fork is probably located on the top shelf (see <link ref="tec2975">another set of tuning forks</link>) on the same photograph. See color photographs of tuning forks in the Harvard Collection of Historical Scientific Instruments: <link href='http://dssmhi1.fas.harvard.edu/emuseumdev/code/emuseum.asp?rawsearch=Number%2F%2C%2Fis%2F%2C%2FWJ0009%2F%2C%2F0%2F%2C%2F0'>UT 4</link>, <link href="http://dssmhi1.fas.harvard.edu/emuseumdev/code/emuseum.asp?rawsearch=Number%2F%2C%2Fis%2F%2C%2F1997-1-1040%2F%2C%2F0%2F%2C%2F0">UT 2</link> and <link href="http://dssmhi1.fas.harvard.edu/emuseumdev/code/emuseum.asp?rawsearch=Number%2F%2C%2Fis%2F%2C%2FWJ0008%2F%2C%2F0%2F%2C%2F0">UT 4</link>. Set of twelve tuning-forks, with resonance-boxes, Ut2 Ut3, Mi3, Sol3, La3, Ut4, Mi4, Sol4, seventh harmonic of Ut2, Ut5, Re5, Mi5. By Koenig, Paris

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