In article , Mike Henry
writes

"Nigel Eaton" wrote in message
...
In article , Carla Fong
writes
Leo Lichtman wrote:
"DoN. Nichols" wrote: Neat -- but I prefer having a real one in my
hands.
^^^^^^^^^^^^^^^^^
Me too. I collect sliderules, but mine are not as funny as this.


What's really fun with a slide rule nowadays is demonstrating one to a
youngster who only knows 'calculator math'. They think it's some sort of
'black magic'.

Can I just piggyback on this thread to (hopefully) answer a question?

I've got a slide rule that I acquired many years ago. It's a bit odd,
though (I think).

It has scales marked in KW, HP and Amps. It also has one scale with a
marking at the end "10Yd.10000 circ. mil.". It's marked "Made in Bavaria"

Ring any bells with anyone?

Not specifically, but it sounds like one of those slide-rule type
calculators that were produced as give-aways by various companies. They've
been designed for all sorts of specific tasks. In your case it sounds like
it was made for some sort of electrical calculations, and I've seen the same
sort of thing for machining operations (speeds & feeds for various materials
& diameters), hydraulic flow, and all manner of other engineering
applications. Every once in a while I pick up a batch of them on Ebay. My
favorite is a Pratt & Whitney Gas Turbine "Computer", which is of the
circular style but my most used is one by Holo-Krome that shows dimensional
data for various fasteners. That one comes in quite handy when designing
various projects.

Does yours have a company name on it?

No, just the maker's name (Faber) and "Castell".

I've been Googling and found this:

http://www.sliderules.clara.net/a-to...electrical.htm

Which suggests it's a Faber Castell 1/98 "Elektro".

I must read up a little more and have a play with it.

--
Nigel

When the only tools you have are a Bridgeport, a CNC Taig Mill, a Colchester
and assorted other stuff, every problem looks like a steam engine.