Ask MAKE: Are My Gears Metric or Imperial?
It's fun to salvage gears from old machines for new projects — but how can you tell if they're metric or Imperial? 
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MAKE Magazine and Instructables.com's Blog
MAKE Magazine and Instructables.com isn't a Goodreads Author
(yet),
but they
do have a blog,
so here are some recent posts imported from
their feed.
