History

1959's Friden SBT10 was a very luxury full function mechanical calculator. This video shows how it divides 355 by 113 (approximation of π) and other calculations

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[source, Tiny H: https://t.co/meaRUffRto]pic.twitter.com/aYUzJGxFVe

— Massimo (@Rainmaker1973) September 14, 2022