Slide Chart, Quincy Compressor Selector

This slide chart, distributed by the Qunicy Compressor company of Quincy, Illinois, is designed to allow customers to select the appropriate model of Quincy air compressor to purchase, knowing the pressure at which the air is to be delivered and the number of cubic feet per minute of air delivery desired. On one side, pressures range from 30 to 100 pounds On the other, they range from 110 to 250 pounds. For each model, the chart indicates the horsepower, speed, and piston displacement.
The chart consists of a paper envelope held together with metal rivets and a paper slide that moves crosswise. A mark near the bottom reads: Copyright 1941 Perry Graf Corp. Maywood, Ill. Slide charts made by Perry Graf that are in the Museum collections include 1979.3074.03, 1983.3009.04, 1983.3009.05,1983.3009.06, 1987.0108.03, and 1988.0325.01, and 1988.3076.01.
Currently not on view
Object Name
mathematical table
date made
ca 1941
Quincy Compressor Co.
Physical Description
paper (overall material)
metal (overall material)
overall: .2 cm x 21.2 cm x 9.2 cm; 3/32 in x 8 11/32 in x 3 5/8 in
place made
United States: Illinois, Quincy
ID Number
catalog number
nonaccession number
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Mathematical Charts and Tables
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of I. Bernard Cohen
Additional Media

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