Box 2
Container
Contains 1 Result:
Thacher calculator model 4013, c. 1910
File — Box: 2
Identifier: Series 1
Abstract
Cylindrical slide rule housed in original wooden box. Used for engineering calculations. Belonged to Ralph Goodrich, a civil engineer who worked in New York, Michigan, Wyoming, Colorado, and China. A brief history/provenance is in the collection file.
Dates:
c. 1910