Turbidity Gauge
notes: label: Description
content: In 1903, a water engineer named Allen Hazen described a stick for measuring turbidity that he had designed for the U.S. Geological Survey. In principle, wrote Hazen, “it depends upon the distance beneath the surface of the water at which a platinum wire one millimeter in diameter can just be seen, the light being full and strong, but not direct sunlight.” The Water Resources Branch of the U.S.G.S. transferred this example of that instrument to the Smithsonian in 1908.
label: Description
content: Ref: Allen Hazen, “The Physical Properties of Water,” <i>Journal of the New England Water Works Association</i> 17 (1903): 21-27.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.248694
label: catalog number
content: 248694
label: accession number
content: 48341
objectType: label: Object Name
content: Turbidity Gauge
physicalDescription: label: Measurements
content: overall folded: 2 in x 1 in x 8 1/4 in; 5.08 cm x 2.54 cm x 20.955 cm