Hydrometer
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Atkins Fenchurch Street London.\u00e2\u0080\u009d There are three round brass weights, and a wooden sliding rule to correct the reading for changes in temperature. The signature is that of George Atkins, a mathematical instrument maker who had a shop on Fenchurch St. by 1804, and who later worked at other addresses."}, {"label": "Description", "content": "A label on the bottom of the mahogany box reads \u00e2\u0080\u009cJAMES GREEN / MAKER OF / Philosophical and Mathematical / INSTRUMENTS, / No. 43 SOUTH STREET / BALTIMORE.\u00e2\u0080\u009d Born in England in 1808, Green was in the U.S. by 1834, had an instrument shop in Baltimore by 1837; and moved to New York City in 1849."}, {"label": "Location", "content": "Currently not on view"}], "physicalDescription": [{"label": "Measurements", "content": "overall: 2 1/2 in x 13 3/4 in x 4 1/2 in; 6.35 cm x 34.925 cm x 11.43 cm"}, {"label": "Measurements", "content": "slide rule: 1 3/16 in x 13 1/8 in x 5/16 in; 3.01625 cm x 33.3375 cm x .79375 cm"}, {"label": "Measurements", "content": "overall in case: 2 7/16 in x 13 5/8 in x 4 3/8 in; 6.19125 cm x 34.6075 cm x 11.1125 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "hydrometer"}]}}, "url": "edanmdm:nmah_1762292", "hash": "9b204d8efd5ba37dd9a87a249b09e40e131f800c", "docSignature": "0c3a37d0bb5ed5a7ab397ce74f277fb7", "timestamp": 1663336903, "lastTimeUpdated": 1653680688, "title": "Hydrometer"}