Mercury Wheel Barometer
date: label: date made
content: 1840s
name: label: maker
content: Leoni, George
notes: label: Description
content: The large circular face of this mercury barometer is silvered, and marked ‘LEONI’S IMPROVED” and “114 JOHN ST / New York / WARRANTED.” The scale around the circumference extends from 28 to 31 inches, and is subdivided to 0.01 inch; there are also markings for “Stormy,” “MUCH RAIN,” “Change,” “FAIR,” “SET FAIR,” and “Very Dry.” The mercury-in-glass thermometer at the top is mounted on a silver plate carrying a scale that extends from -20 to +120 degrees Fahrenheit, with indications for “FREEZING,” “TEMPERATE,” “SUMR HEAT,” BLOOD HEAT,” and “FEVER HEAT.” The case is rosewood veneer over pine. George Leoni worked in New York in the 1840s, advertising as “Importer and Manufacturer of Mathematical and Philosophical Instruments, &c.”
label: Description
content: Ref: George Leoni, <i>Ample Instruments for the Barometer and Thermometer</i> (New York, 1841).
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York City
topic: label: Subject
content: Italian Americans
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Barometers
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content: Measuring & Mapping
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1990.0112.01
label: accession number
content: 1990.0112
label: catalog number
content: 1990.0112.01
objectType: label: Object Name
content: barometer, mercury
physicalDescription: label: Measurements
content: overall: 41 in x 12 1/4 in x 1 5/8 in; 104.14 cm x 31.115 cm x 4.1275 cm