The device, called "meteoballistic summator", consisted of a specialized slide rule and a pre-calculated table.
en.wikipedia.org Mil dots are used like a slide rule to measure the height of a target, and if the height is known, the range can be as well.
en.wikipedia.org The six-month curriculum combined theory and hands-on practice, with the students as familiar with a slide rule as with a soldering iron.
en.wikipedia.org Lecture topics included advanced algebra, trigonometry, the slide rule, electrical and electronic circuits, communication receivers and transmitters, antennas, and servomechanisms.
en.wikipedia.org As order of magnitude gets the greatest prominence when using a slide rule, users are less likely to make errors of false precision.
en.wikipedia.org