⚙️ Stop-Motion Accuracy: The October patent added a stop-motion device that kept mechanical gears from overshooting during rapid calculations.

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Comptometer. September 1939.
#modernarchitecture #businessmachines #Comptometer #calculators #addingmachines #JohnsonsWax #FrankLloydWright #Racine #Wisconsin #blackandwhitephotography

‘... In the recently completed Johnson’s Wax office Building, 60 Comptometers handle practically all figure work of the world’s largest manufacturers of wax polishes. ...’
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