If you like Nomograms or other mechanical mathematical curiosities, do check out @ChrisStaecker on YouTube. He does short, funny reviews/how-to videos for his collection of nomograms, measuring tools, mechanical and paper calculators.

Unfortunately his channel also mixes his university lectures, so you have to check out his playlist [0].

Here's a nomogram for solving a quadratic equation. Check out the O-riginal video on YT! [1]

[0] https://www.youtube.com/playlist?list=PLLFpXNanTP9X6lHrX9qoJ...

[1] https://www.youtube.com/watch?v=swCy6pQSEpk&list=PLLFpXNanTP...