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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
8/168
Faber-Castell for Mobile Oil Company
Germany
Plastic
1950-1970
dia = 11.9 cm
Commercial / Advertizing
Notes:
A simple 2 sided slide rule with simple temperature conversions and other calculation on one side 2) The reverse side has a graph for petroleum density versus temperature and a table listing weight and volumn of petroleum
Image 1
Image 2
Image 3
