Balance
date: label: date made
content: 1866
name: label: patented by
content: Ehrhardt, J. H.
label: maker
content: Ehrhardt, J. H.
notes: label: Description
content: Patent model for Johann Heinrich Ehrhardt, “Improvement in Machines for Determining the Load of Car-Axles,” U.S. Patent 52,653 (Feb. 13, 1866). A brass tag on the frame reads “H. Ehrhardt / Dresden.” Ehrhardt's platform scale was designed to balance the load of locomotives and other railroad cars, so as to equalize the pressure on each of the wheels.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Saxony, Dresden
topic: label: Subject
content: Weights & Measures
setName: label: See more items in
content: Medicine and Science: Chemistry
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: CH.308924
label: accession number
content: 89797
label: catalog number
content: 308924
label: patent number
content: 52,653
objectType: label: Object Name
content: Machine for Determining the Load of Car Axles
label: Object Type
content: Patent Model
physicalDescription: label: Measurements
content: overall: 13.7 cm x 2.7 cm x 28 cm; 5 3/8 in x 1 1/16 in x 11 in
label: Measurements
content: overall: 5 in x 1 1/8 in x 11 in; 12.7 cm x 2.8575 cm x 27.94 cm