Re: Dietzgen Rules

Maciej M. Sysło

Hi Rod,
I have Overhead Projection Rules by FC and by Aristo in very good conditions and with docs.
I have also Classroom Demonstration Ruler by FC, 2 m long.

pt., 12 lut 2021 o 13:45 Rod Lovett <rod@...> napisał(a):

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?



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