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| View Original: | Sling psychrometer (hygrometer), early 1900s, Tycos Taylor Instrument Company - DSC06538.JPG (4320x3240) | |||
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| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Sling psychrometer (hygrometer), early 1900s, Tycos Taylor Instrument Company - DSC06538.JPG Scientific instrument exhibited in the Franklin Institute Philadelphia Pennsylvania USA I took this photograph 2011-10-20 10 58 11 Daderot Scientific instruments in the Franklin Institute | ||||
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