Archive
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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
AA
Dempster
"U.S.A (Berkeley, CA)"
Plastic
ext. 1943 or 1944
Diam 13 cm
General Purpose
Notes:
"Spirial scale = 127 cm, 26 scales total both sides including a stadia scale"
Image 1
Image 2
Image 3
Image 4
Image 5
