Winlock & Huddleston Psychrometer
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F.", "Winlock, Joseph"], "topic": ["Thermometers and Hygrometers"], "place": ["United States", "Massachusetts", "Boston"], "online_media_type": ["Images"]}, "freetext": {"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"}], "date": [{"label": "date made", "content": "1873"}], "identifier": [{"label": "ID Number", "content": "PH.309319"}, {"label": "catalog number", "content": "309319"}, {"label": "accession number", "content": "89797"}, {"label": "patent number", "content": "149,176"}], "notes": [{"label": "Description", "content": "This is the model that Joseph Winlock, a professor of astronomy at Harvard College, and John S. F. Huddleston, a thermometer and barometer maker in Boston, submitted along with their patent application in 1873. 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": "Description", "content": "Ref: J. Winlock and J. S F. Huddleston, \"Psychrometer,\" U.S. Patent 149176 (issued 1874)."}, {"label": "Location", "content": "Currently not on view"}], "name": [{"label": "maker", "content": "Huddleston, John S. F."}, {"label": "maker", "content": "Winlock, Joseph"}], "place": [{"label": "place made", "content": "United States: Massachusetts, Boston"}], "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"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "psychrometer"}, {"label": "Object Type", "content": "Patent Model"}]}}, "url": "edanmdm:nmah_1167496", "hash": "0cacdcda466dc2bc1a6a6e606dfda6c4b275da7c", "docSignature": "66f1b284acb5ce4038ff4849af58d7e5", "timestamp": 1663782461, "lastTimeUpdated": 1655973882, "title": "Winlock & Huddleston Psychrometer"}