A Shell "Nomograph" Mileage Calculator, and a Honeywell Galvanometer Circuit Nomograph.
Scan of the Honeywell nomograph: https://faculty.fairfield.edu/cstaecker/files/machines/galvanometer.jpg
Scan of the Shell nomograph: https://faculty.fairfield.edu/cstaecker/files/machines/shellnomo.jpg
This is episode 24 of my video series about calculating devices.
End song inspired by "Hotter Than a Molotov" by The Coup.
Chris Staecker webarea: https://faculty.fairfield.edu/cstaecker