The Caltech Archives
Welcome imageimageimage
Archives Catalog Entry

Scientific Apparatus
Thacher's Calculating Instrument in wood case

Patented 1881. No. 4012, serial number #255. Beautiful condition. With wood case. Manufacturer: Keuffel & Esser Co, NY.


ID: 1980-00041

MEDIUM: Ivory and other; LENGTH: 21.5 x 5.5 x 5.5 inches; QUANTITY: 1

Topics: Mathematics

For information on using Archives materials for commercial or educational purposes (including reproducing PhotoNet images) please see Access and Use.

Return to Search the Archives

Search Help

Caltech