I was in Barnes & Noble again today and I always find myself glancing
through the reference section for a book I saw about six months ago.
It was on great inventions, ideas, and applications of technology
that have had a profound influence on mankind. You probably seen a
couple of these things around.

As you might expect, I thumbed through it quickly searching for some
mention of the slide rule. To my great satisfaction there was a page
or two devoted to it. I can not remember the name of the book or its
author. I was in a hurry and I figured it would still be around the
next time I went back. Fast forward a couple days, I'm in B & N and
the book is gone...no sweat, I'll look around. Six months later...

I can't seem to forget about it because the SR that was held up as an
example was sort of unique in that the scales were labeled in a way
that you needed to hold the SR vertically to work it; the initial
index at the bottom, and the terminating index at the top. I'm
guessing this was a really old slide rule, but I have never seen
another example of this on the internet.

Has anyone in the group seen this book or know anything of the SR I'm
talking about? I know what your thinking...just ask customer service,
right? Well, I've tried that but it seems that the book store has had
a number of these books in the past. The customer service people are
always kind enough to hit me with their stock question, "We do not
have any of these in stock, but we can put them on order if you
like?" The truth is I don't want to do that without being relatively
sure which one it is.

Any feed back on this SR, or book would be appreciated.

Thank you in advance for your attention.

Johnny