Yu Chen-shan's Ready Reckoners

Year:1962 Issue:34

Column: ARTICLES

Author: LI CHENG-CHIEH

Release Date:1962-08-24

Page: 15-17

Full Text:

By manipulating two or three foot-rules together, carpenter Yu Chen-shan can solve at a glance many mathematical problems. With only three years' schooling, he worked out this calculating method in...

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