The Public Domain Review
Beautiful diagrams from a circa 17th-century copy of Muslim polymath Ismail al-Jazarī’s *Book of Knowledge of Ingenious Mechanical Devices*, originally published in 1206: https://publicdomainreview.org/collection/arabic-machine-manuscript
Feb 28 at 5:46pmPDR Poster
Show threadJo - pièce de résistanceFeb 28
@publicdomainrev wow!
Show threadDavid FetterMar 1
@publicdomainrev we definitely need to do more engineering drawings in this style.
Show threadWeekend EditorMar 1

@publicdomainrev

A few more of those, and you could make the coolest quilt ever.