My reviews & how-tos for adding machines and other antique calculating devices.
Curated by: Chris Staecker (120 videos)
A dot planimeter, invented by Steinhaus and Abell (independently) in the 1920s and 1930s. This is episode 54 of my video series about old calculating devices. See the references and download & print your own dot planimeter: http://cstaecker.fairfield.edu/~cstaecker/machines/dotplanimeter.html Thanks to Dr Grzegorz Graff for helping me find the original Steinhaus paper. End song inspired by "Hotter than a molotov" by The Coup. #steinhaus #pupcake Chris Staecker webarea: http://cstaecker.fairfield.edu/~cstaecker Riemann sum graphics by Wikipedia user KSmrq, CC-by-SA-3.0