W*D*H = 6" * 7" * 5_1/2"  ;                     2_1/2 lbs = 1.4 kg
      = 15 cm * 17.5 cm * 14 cm

The input wheels ( made of plastic ) are operated by fingers.  To
clear the arithmetic unit, the crank has to be  pushed first  and
than turned clockwise.  Lever  »A« / »S«  switch from ADDITION to
SUBTRACTION mode.  Clearing in »A« mode only!

Made by Heinrich Holz, Oberbilstein, Germany                (1960)

An all-metal Version was as  » REGINA-7 «  on the market.

impressum:
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© C.HAMANN       http://public.BHT-Berlin.de/hamann       08/13/09