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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Pocket Watch Style
Calculigraphe No. 3
F.C. Calculigraphe
France
Metal & Glass
est. 1920 to 1940
Dia. = 5.2 cm
General Purpose
Notes:
"Scales on both sides, uses the Boucher system"
Image 1
Image 2
