My reviews & how-tos for adding machines and other antique calculating devices.
Curated by: Chris Staecker (120 videos)
A K+E Radial Planimeter, from 1920s. It measures the average radius of a roughly circular shape! This is episode 76 of my video series about old calculating devices. Radial planimeter instructions: https://archive.org/details/radialinstructions End song inspired by "Hotter than a Molotov" by The Coup. Chris Staecker webarea: https://faculty.fairfield.edu/cstaecker #planimetria