Perrygraf Cutting Fluid Guide/Cutting Speed Calculator for Texaco
date: label: date made
content: 1946
name: label: maker
content: Perry Graf Corporation
notes: label: Description
content: Since 1934 Perrygraf (or Perry Graf) Corporation of Maywood, Ill., has prepared a variety of sliding charts and rules for advertising purposes. See 1979.3074.03 for company history. Perrygraf designed this white, green, and red rectangular cardboard instrument, held together with six metal rivets, in 1946 for The Texas Company (Texaco) of New York, N.Y. On one side is a "Cutting Fluid Guide," which indicates the type of Texaco cutting oil that should be used for various methods of cutting different groups of metals. The first four groups, of ferrous metals, are listed in a table on the other side of the instrument. A table for the last five groups, of nonferrous metals, appears on one side of the slide. Below the table of ferrous metals is a "Cutting Speed Calculator" with a logarithmic scale for computing the cutting speed in revolutions per minute, given the surface speed in feet per minute and the work diameter in inches.
label: Description
content: The Texaco logo in the front lower right corner is the form used between 1936 and 1963. The back lower left corner is marked Printed in U.S.A. 2–46. Perry Graf Corp. Maywood, Ill.
label: Description
content: References: Tom Wyman, "Slide Chart Calculators – A Modest Proposal," <i>Journal of the Oughtred Society</i> 13, no. 1 (2004): 6–10; "Texaco," <i>Logopedia</i>, http://logos.wikia.com/wiki/Texaco.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Maywood
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
label: Subject
content: Petroleum
label: Subject
content: Manufacturing
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 I. Bernard Cohen
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1988.0323.01
label: accession number
content: 1988.0323
label: catalog number
content: 1988.0323.01
objectType: label: Object Name
content: slide rule
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: metal (part material)
label: Measurements
content: overall: .3 cm x 23.5 cm x 10.2 cm; 1/8 in x 9 1/4 in x 4 1/32 in