My reviews & how-tos for adding machines and other antique calculating devices.
Curated by: Chris Staecker (120 videos)
The Quincunx model WD-7, made by the Lightning Calculator Company, probably in the 1980s? This is episode 93 of my video series about old calculating instruments. The Galton Board: Math In Motion documentary: https://www.youtube.com/watch?v=9QuPHf1xi-4 End song inspired by "Hotter than a Molotov" by The Coup. https://youtu.be/X8AW7PmsxAY Chris Staecker webarea: https://faculty.fairfield.edu/cstaecker