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Manufactured by Coleman Electric Company, Inc., Maywood, Illinois; serial #9171, 1940s. This instrument was used in the U.S. Geological Survey Water-Quality office/laboratory in Worland, Wyoming which opened in 1946 and closed in 1982. It was used to measure how much color spectra was absorbed by wa...
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Universal Spectrophotometer
Manufactured by Coleman Electric Company, Inc., Maywood, Illinois; serial #9171, 1940s. This instrument was used in the U.S. Geological Survey Water-Quality office/laboratory in Worland, Wyoming which opened in 1946 and closed in 1982. It was used to measure how much color spectra was absorbed by wa...
Location: Reston, VA, USA
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