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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
681210
Deci Lon /Keuffel @ Esser Co.
USA
Plastic on wood
est 1950's
25 cm
Engineering
Notes:
(4081-3) Log Log Duplex Decitrig
Image 1
Image 2
Image 3
