Cathetometer
notes: label: Description
content: A cathetometer is an upright ruler with a telescope that precisely measures the vertical difference between two points. The form was introduced in Paris around 1815 and the name around 1847. The U.S. Military Academy, which owned this example, acquired much of its physics apparatus from Paris.
label: Description
content: Ref: D. J. Warner, “Cathetometers and Precision Measurement: The History of an Upright Ruler,” <i>Rittenhouse</i> 7 (1993): 65–75.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Science & Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315755
label: catalog number
content: 315755
label: accession number
content: 217544
objectType: label: Object Name
content: cathetometer
physicalDescription: label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 54 1/4 in; 137.795 cm