Ross Precision Computer Related Documentation
date: label: date made
content: 1918-07-31
name: label: maker
content: Computer Manufacturing Company
notes: label: Description
content: Two copies of an advertising flyer for the Ross Precision Computer, the Ross Meridi-o-graph, and the Ross Rapid Computer were received with 1996.3077.01. The flyer provides photographs and descriptions of the three instruments. It also cites press releases published in <i>Scientific American</i> 114, no. 3, January 15, 1916, and <i>Engineering News</i> 75, no. 21, May 25, 1916.
label: Description
content: Also received was a short letter initialed by the inventor of these devices, Louis Ross, and addressed to Roy Kegerreis of New York City. The letter, dated July 31, 1918, notes the availability of the instruments and offers them on a trial basis. Enclosed were a 3-1/4" by 6-1/2" printed note addressed "To Men in the Army and Navy," describing the suitability of the instruments for military purposes. A second printed note, of the same size, announced the addition of trigonometric scales to the Precision Computer even though the price remained at $20.00.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, San Francisco
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Slide Rules
creditLine: label: Credit Line
content: Gift of B.K. Lunde, in memory of Roy Kegerreis
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1996.3077.03
label: nonaccession number
content: 1996.3077
label: catalog number
content: 1996.3077.03
objectType: label: Object Name
content: sheet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 18.3 cm x 15 cm x .2 cm; 7 7/32 in x 5 29/32 in x 3/32 in