How about pictures of the slide calculator, both sides.
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On Thu, Mar 7, 2024 at 12:23?PM stevenhorii <sonodocsch@...> wrote:
I recently bought a “hybrid” - a slide rule with an electronic calculator
on the back. These were made by Faber-Castell but it was not long before
they were eclipsed by the electronic calculators that did the various
functions that slide rules do. To some extent, this makes sense - you don’t
do addition and subtraction on a slide rule. There was an earlier version
that that had an “addiator” on the back.
The calculator takes unusual batteries - like current button cells, but
quite a bit thicker. Fortunately, they have not leaked. Unfortunately, they
are dead so I don’t know if the calculator works.
I also have a Curta “pepper mill”. I’ve also used the Friden calculators. I
swear it’s where the term “crunching numbers” comes from. It’s amazing that
the Curta can do the same operations as the Friden though it does require a
lot of turns of the crank.
I still have my HP-35 calculator and it still works (with the AC adapter).
I have not gone through the effort of rebuilding the battery pack.
Steve H.
On Thu, Mar 7, 2024 at 10:56 garp66 <hrgerson@...> wrote:
Another marvel analog mechanical calculator , of more modern vintage
is the " Curta " , popular in the 1950's to 1970's, but then
eclipsed by the pocket calculator.
