Westphal Specific Gravity Balance
date: label: date made
content: first half twentieth century
name: label: maker
content: Henry Troemner
notes: label: Description
content: A specific gravity balance is used to measure the buoyancy of an object by weighing that object in air and then in water. The form was devised by a German pharmacist, Karl Friedrich Mohr, and improved by Georg Westphal (1836-1902), a balance and philosophical apparatus maker in Celle. The beam of this example is marked “Henry Troemner Maker Philadelphia Pa.” as is a tag on the box.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Philadelphia
topic: label: Subject
content: Weights & Measures
setName: label: See more items in
content: Medicine and Science: Chemistry
creditLine: label: Credit Line
content: National Bureau of Standards
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: CH.326629
label: catalog number
content: 326629
label: accession number
content: 261654
objectType: label: Object Name
content: Specific Gravity Balance
label: Object Type
content: Balances
physicalDescription: label: Measurements
content: tube: 5 7/8 in x 2 in; 14.9225 cm x 5.08 cm
label: Measurements
content: box: 10.2 cm x 17.2 cm x 23.5 cm; 4 in x 6 3/4 in x 9 1/4 in
label: Measurements
content: overall: 21.5 cm x 21.5 cm; 8 7/16 in x 8 7/16 in