PIN WHEEL / SPROSSEN-RAD
R E M A R K S : Pictures are copies from historic sources
The Pin Wheel Photos are taken from the » FELIKS-M ARITHMOMETER «
courtesy of Wolf Bluemich Collection
See also: FACIT's Version of "MODIFIED PIN-WHEELS" ...
See also: 10s-CARRY for PIN-WHEELS ...
impressum:
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© C.HAMANN http://public.BHT-Berlin.de/hamann 12/11/10