Both the Hemmi 266 and 256 belong on this list. (There seems to be
a bit of confusion, a typo or something on this point.) Relay/Ricoh
made at least one under the Micronta label.

I would delete the Pickett N600 as it is a general purpose log log
rule.

There are a cople of fairly standard types, the simplex with motor
scales, and the duplex hyperbolic rules. Beyond that, I've never
heard any definition given.

I believe the K&E Cooke Radio rule dates from early WWII. It had
the 2pi scale and has been copied by Picket (The N515-T) and Aristo.

I have a really unusual rule that is for calculating finish, doping,
resisitivity, etc. of a silicon bole as used for making
semiconductors. Talk about a rule that was working for its own
demise!



--- In slideruleforum@yahoogroups.com, "Robert Adams"
<adams.robert@e...> wrote:
>
>
> Nearly every manufacturer made an electrical slide rule and a few
> made particular electronics rules. a few to add to the list are
>
> Faber Castell 1/98
> Faber Castell 1/78
>
> W&G 432
>
> Nestler 37
>
> Aristo 914 and 915
>
> Graphoplex 698
>
> Hemmi 80, 255, 256
>
> Unique Electrical
>
> PIC 18
>
> Veb Mantissa elektro
> Reiss Elektro
>
> As you can see I collect electrical sliderules and I will look at
my
> collection tonight to add to the list
>
> Cheers
> Bob Adams
>
> --- In slideruleforum@yahoogroups.com, borpe2001 <no_reply@y...>
> wrote:
> >
> >
> > Can anyone come up with a canonical list of slide rules for
> > electrical/electronics engineers ?
> >
> > First entries might be:
> >
> > Pickett N16-ES
> > Pickett N515-T
> > Pickett N531-ES
> > Pickett N600-ES (& -T)
> >
> > K&E 4139
> >
> > Sun/Hemmi 266
> >
> > Jakar Electro
> >
> > Nestler 0370
> >
> >
> > Additions ?