Slide rule (14h 39min, nov 21, 2018 y – jan 1, 1976)
Description:
The slide rule can do Multiplication, Division, Proportions, Squares and Square Roots, Cubes and Cube Roots, Sines, Cosines, Tangents, and Cotangents, Logarithms, and more depending on the rule used. The last slide rule manufactured in the United States was produced on July 11, 1976Added to timeline:
Date:
14h 39min, nov 21, 2018 y
jan 1, 1976
~ 42 years