PRODUX calculators were sold by different travelling salesmen also
under their own names.  This  »EFZET«  is from Franz Zimmer (=FZ).
( Info from Wolf Bluemich's HomePage )

PRODUX / EFZET,  Klausdorf / Germany  (1940)

The EFZET came in a cardboard/fabric folder with a stylus holder.
To RESET the calculator, push it vertical on the table's surface.

B o d y   S i z e   ( W * D * H )    =   62 mm * 115 mm * 3 mm

impressum:
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© C.HAMANN       http://public.BHT-Berlin.de/hamann        06/26/10