beowabbit (
beowabbit
) wrote
in
jducoeur
2012-09-25 05:19 pm (UTC)
no subject
Photos of circular slide rules for comparison at:
http://en.wikipedia.org/wiki/Slide_rule#Circular_slide_rules
(I really like the idea of having one on a ring!)
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no subject
http://en.wikipedia.org/wiki/Slide_rule#Circular_slide_rules
(I really like the idea of having one on a ring!)