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Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
#58 Coil Weight & Length Calculator
Perrygraf for Littell Machine Company
USA
Cardstock
c. 1958
Dia. = 12.9 cm
Machine Industry
Notes:
Used in the sheet steel industry to determine coil weights and lengths with various constant tables on the reverse side
Image 1
Image 2
