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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Geocachingng Coin Slide rule
PHDCOINS.CA
USA
Metal
est. current
Dia. = 5.1 cm
Geocaching
Notes:
A geocoin slide rule with simple C and D scales
Image 1
Image 2
Image 3
