Archive
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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
A
Dempster
"U.S.A (Berkeley, CA)"
Plastic
est 1928 to 1930
Diam 13 cm
General Purpose
Notes:
"Spirial scale = 127 cm, 23 scales total both sides including a stadia scale"
Image 1
Image 2
