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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Gilson Midget Type IV Version II (Gilson SR Co.)
Gilson
USA
Aluminum
"p 1922, c 1919"
Dia = 10.2 cm
"Multiplication, division, trig"
Notes:
"Niles, Michigan, so manufacturered before 1927"
Image 1
Image 2
