Vol. 25: The Chinese Windlass

British soldiers, encamped on the outskirts of Beijing after the war, took note of an ingenious device being used to raise and lower drawbridges.

By William Gurstelle

Photos by Ed Troxell

Illustrations by Katie Wilson

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MAKE: AMENDS Errata for This Article


Correction for page 171
Volume 26's Make Amends incorrectly corrected the equation values in Volume 25's Remaking History. Aargh! The crank length (a radius) is 6" as originally stated, but the radius of the large barrel is 1.5". The value of the expression is therefore 96, not 48.

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