Analytical Balance
date: label: date made
content: around 1940
name: label: maker
content: William Ainsworth and Sons
notes: label: Description
content: Analytical balance in a wood case with glass sides and top. The beam is notched and made of an aluminum alloy. The inscription on the ivory scale reads “WM AINSWORTH & SONS INC. / DENVER, COLO. MADE IN U.S.A. / TYPE D.L.B. NO 17829.” A vertical rod in the case is marked “U.S. Patents / 2,022,306 / 2,111,842.” Both patents pertain to an adjustable counterbalancing chain that facilitates weighing small and light objects. An iron piece attached to the main support is marked “CENCO.” The Central Scientific Co. offered this model for “rapid, accurate, analytical weighing in research or other precision laboratory work.” New it cost $180.
label: Description
content: This came from Garfield & Co., a New Jersey firm that produced and packaged a popular headache remedy known as Seidlitz powder. Isidor Z. Garfield (1863-1951), the founder of the firm was a chemist with a degree from the University of Moscow who arrived in the United States in 1888.
label: Description
content: Ref: Robert G. Ainsworth and Alfred W. Ainsworth, “Balance,” U.S. Patent 2,022,306 (Nov. 26, 1935), assigned to William Ainsworth & Sons.
label: Description
content: Albert Dahlberg and Gordon S. Clayson, “Precision Balance,” U.S. Patent 2,111,842 (March 22, 1938), assigned to Wm. Ainsworth & Sons.
label: Description
content: Central Scientific Co., <i>Scientific Instruments, Laboratory Apparatus and Supplies</i> (Chicago, 1941), p. 10.
label: Location
content: Currently not on view
place: label: place made
content: United States: Colorado, Territory of, Denver
topic: label: Subject
content: Weights & Measures
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Gift of George and Julius Garfield
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1979.1144.019
label: accession number
content: 1979.1144
label: catalog number
content: 1979.1144.019
objectType: label: Object Name
content: Analytical Balance