Winlock & Huddleston Psychrometer
date: label: date made
content: 1873
name: label: maker
content: Huddleston, John S. F.
label: maker
content: Winlock, Joseph
notes: label: Description
content: Patent model for Joseph Winlock and John S F. Huddleston, "Psychrometer," U.S. Patent 149,176 (March 31, 1874). Joseph Winlock was a professor of astronomy at Harvard College, and John S. F. Huddleston was a thermometer and barometer maker in Boston. The wet bulb thermometer is mounted on a brass plate that is marked "HUDDLESTON BOSTON" and graduated every degree Fahrenheit from +10 to +115. The dry bulb thermometer is missing.
label: Description
content: The wooden tower holds a rotating chart that indicates relative humidity, and carries a brass plate graduated every degree from +6 to +113. The patent described "a simple, efficient, and convenient means of determining the relative humidity of the atmosphere or the dew-point, so called, without calculation."
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Boston
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Thermometers and Hygrometers
label: See more items in
content: Measuring & Mapping
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.309319
label: catalog number
content: 309319
label: accession number
content: 89797
label: patent number
content: 149,176
objectType: label: Object Name
content: psychrometer
label: Object Type
content: Patent Model
physicalDescription: label: Measurements
content: overall: 14 3/4 in x 8 1/2 in x 4 in; 37.465 cm x 21.59 cm x 10.16 cm