Re: Dietzgen Rules


Karl Kleine
 

Hello Rod,

I have 3 Dietzgen catalogues: #9 of 1910/1911 (reprint), #13 of 1928, and #22D of 1953.
Unfortunately, none of these contain demo or projection slide rules.
Dietzgen's target was the professional office, not educational institutions, at least in these catalogues.

best regards, Karl

____________________________________________________________________________
Prof. Karl Kleine - c/o Ernst-Abbe-Hochschule Jena, Germany - karl.kleine@eah-jena.de

________________________________________
Von: sliderule@groups.io <sliderule@groups.io> im Auftrag von Rod Lovett <rod@lovett.com>
Gesendet: Freitag, 12. Februar 2021 13:45
An: sliderule@groups.io
Betreff: [sliderule] Dietzgen Rules

Hi All,

Does anyone have any details, good images, references etc., of Classroom Demonstration Rules and/or Overhead Projection Rules and/or Slide Projection Rules made by Dietzgen?

Regards,

Rod

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