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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Roplex
Graphoplex
France
Plastic + metal
13 cm
General Purpose
Notes:
"Well made circular slide rule with 3 discs (one sliding), and 2 cursors on the 2 sides, 2 knurled knobs for both the slider (rotator) and the cursor"
Image 1
Image 2
