I used to have one like that! I probably still do in a box someplace.
It IS a cool slide rule even though I got it after I got a calculator (mid 70-s).
Eric
Ian Koller wrote:
  Fred,
   I've got a circular slide rule that fits in your shirt
 pocket and has formulas, conversion tables, physical constants,
 etc. and even a periodic table either on the back or on a pull
 out card. That one is so neat, I'll never let it go.
 "Fred Cisin (XenoSoft)" wrote:
 >
 > On Thu, 8 Nov 2001, Feldman, Robert wrote:
 > > (BTW, my 14-year old son has three slide rules and was quite interested in
 > > the giant one up on the wall in a hall at his high school.)
 >
 > A friend of mine has one of those.  I'm envious.