On Thu, 12 Sep 2013 17:13:58 -0700 (PDT), True North
wrote:

I have mine stashed away up in an old trunk, up in the attic.
Wish I still had the instructions that came with it. I forget how to do anything other than the simplest calculations.

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The most important thing to learn with a slide rule is how to keep
track of the decimal point, and that doesn't involve the slide rule at
all.