J.P. created a very informative site with lots of pictures.
A beautiful site made by Paul Crespel, author of TRADE MARK LONDON - the complete story of Francis Barker and his compasses and instruments.
Chris Cole created a very interesting compass site. Lot of good articles.
Steven Liang made a timeline for the Chinese military marching compass history
New site, with a lot of info on German compasses.
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