Instructions for Keuffel & Esser Compensating Polar Planimeters

Description
The citation information for this 32-page booklet is: K+E Manual: Compensating Polar Planimeters, 4236, 4236M & 4242 ([New York]: Keuffel & Esser Co., 1949). It was received with 1991.0882.01.
The booklet explains the operation, care, and use of compensating polar planimeters, with several pages on tracing areas and making calculations. Five tables of factors and settings for scale drawings or maps are provided. The booklet also discusses factors influencing the accuracy of the instrument and highlights adjustments and measurements unique to K&E model 4242, which had adjustable arms. See 1999.0250.01 and 1998.0032.03. Finally, the general mathematical theory of the polar planimeter is outlined.
Location
Currently not on view
Object Name
pamphlet
date made
1949
maker
Keuffel & Esser Co.
Physical Description
paper (overall material)
Measurements
overall: 13.6 cm x 21.4 cm; 5 11/32 in x 8 7/16 in
place made
United States: New Jersey, Hoboken
ID Number
1991.0882.02
accession number
1991.0882
catalog number
1991.0882.02
subject
Science & Mathematics
Mathematics
Engineering
Planimeters
See more items in
Medicine and Science: Mathematics
Planimeters
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Anne P. Merrill

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