Slide rule
Subject
Subject Source: Library of Congress Subject Headings
Found in 1 Collection or Record:
Edwin Thacher papers
Collection — Box 1
Identifier: MC 13
Abstract
The Edwin Thacher Papers document the years 1873 through 1921, representing Thacher's career as a civil engineer in bridge construction, as well as the creation of Thacher's cylindrical slide rule.
Dates:
Created: 1840-1920