Hydrometer
notes: label: Description
content: Brass hydrometer with square spindle marked “G. Atkins Fenchurch Street London.” 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 “JAMES GREEN / MAKER OF / Philosophical and Mathematical / INSTRUMENTS, / No. 43 SOUTH STREET / BALTIMORE.” 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
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.330585
label: catalog number
content: 330585
label: accession number
content: 299612
objectType: label: Object Name
content: hydrometer
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