Some polar planimeters sold in the United States, particularly the products offered by Keuffel & Esser of New York, cannot be traced to their original manufacturers. Most of these instruments were probably made in Germany or Switzerland. This page also shows the one electronic planimeter in the collections, a polar model made by Lasico of Los Angeles.
"Planimeters - Polar–Other" showing 1 items.
- This 16-page booklet has a salmon paper cover and was received with MA*317925.02. Its citation information is: Directions for the Use, Care and Adjustment of Polar Planimeters (New York: Keuffel & Esser Co., n.d.). Model 4211 is discussed on pages 4–5.
- Compare the booklet to the version scanned by Clark McCoy, http://www.mccoys-kecatalogs.com/KEManuals/Planimeter_Polar/Planimeter_Polar.htm. According to the model numbers included, that booklet was printed between 1925 and 1927, while this booklet was printed between 1930 and 1936.
- Currently not on view
- date made
- Keuffel & Esser Co.
- ID Number
- accession number
- catalog number
- Data Source
- National Museum of American History, Kenneth E. Behring Center