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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Calculimetre G. Charpentier
France
Metal
1930 or earlier
diam. 6 cm
Basic Calculation
Notes:
"""Le Carbone"" engraved on obverse. Le Carbone was a late-19th -early-20th century French firm that manufactured brushes for electric motors."
Image 1
Image 2
