-
“the Enigma of the Ancient Computer: John Napier’s Genius”: Building Instructions and the Secrets of the Green Napier Men Computing Wonders: … to Marvel, Calculate and Rebuild Book
Hands-on exploration of John Napier’s forgotten mechanical calculators: history, step-by-step replica plans, interactive Napier game, tide-calculator story, bowerbird oddity and a brief philosophical musing on Pascal.$0.00$1.99

