Slide rules were widely used in engineering, science, and mathematics until the early 1970s, including during the Gemini and Apollo space programs. Although rendered largely obsolete by the advent of inexpensive electronic calculators, their descendants continue to have specialized applications, such as backup flight computers.
Buzz Aldrin and a floating slide rule during Gemini 12 on 1966 November 13 (NASA).
The giant Taylor Bowl slide rule used to be used to teach the slide rule but today is the trophy for the annual Taylor Hall bowling tournament between the Physics and Math Clubs.
The giant Taylor Bowl slide rule trophy and a victorious Physics Club on 2019 April 28.
