Which company first mass-marketed the iconic yellow slide rule that became a status symbol for engineers and mathematicians in the 1950s-60s?

Before digital calculators and computers transformed mathematics education and professional practice, various analog tools and instruments were vital for calculation and problem-solving. These tools not only shaped how mathematics was taught but also influenced the branding and marketing of educational products throughout the 20th century. Test your knowledge of the corporate history behind these revolutionary mathematical devices!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Keuffel & Esser (K&E)
Faber-Castell
Pickett
Post (Frederick Post Company)