Slide RulesIndex by Purpose
While many slide rules were made as general calculating instruments, for multiplying numbers and solving equations with squares, cubes, trigonometric functions, and logarithms, many others were made to ease the calculations associated with a specific task. Click on items in the list below to see rules in the collection with an identifiable specialized purpose. For comparison, a few illustrative examples of all-purpose slide rules are shown under the link to General Calculation.
"Slide Rules - Index by Purpose" showing 1 items.
- These three photographs relate to the hydraulic slide rule developed for calculations relating to pumps and pipelines at the Georgia Iron Works (2009.0100.01). A snapshot from 1961 shows the slide rule as it was first designed. A second image shows the designer, Danforth W. Hagler, in an office in the 1960s. The third, which is somewhat later, shows Hagler at the console of an IBM 1130 computer. In that photograph, an oversized version of the slide rule he invented is mounted on the wall.
- Currently not on view
- date made
- date received
- ID Number
- accession number
- catalog number
- Data Source
- National Museum of American History, Kenneth E. Behring Center