The Acme Klein Bottle site

http://www.kleinbottle.com/

has a slide rule as the backdrop
to a Klein bottle on its home page.
(See Oct 8, 2002 - Discover Magazine.)
The picture isn't very clear,
but I think it's a K&E.
If you hold the mouse cursor on the
slide rule, you are informed,
"A slide rule behind a big classic
Big Klein bottle"

"Need a zero-volume bottle?
Searching for a one-sided surface?
Want the ultimate in non-orientability?
Get an ACME KLEIN BOTTLE!"
"With its circle of singularities,
an Acme Klein Bottle can be said to exist
inside of itself -- especially handy
during time-reversals."

In addition to Klein bottles, flasks and hats,
you can also buy Klein steins.
The Chinese Spouting Bowl also looks interesting.

[Back to Slide Rule Mode]

Cheers,

Ron McConnell