Magnameta International Petroleum Tonnage Calculator

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Country of manufacture: England,            Date of manufacture: ____,      
Overall length: 80.6 cm,          Width: 14.7 cm,           Thickness: 1.4 cm           Weight: _____ gms.
Materials: Cellulloid laminate on wood, closed form simplex design
Cursor: 11.8 X 14.9 X 0.8 cm, plated steel runners holding a plastic lens; lockable to slider underneath;        Lines: 3
Scales: A (cubic feet) [ B (International specific gravity values), C (International specific gravity values), D (A.P.I. gravity values) ] E (tons)
Condition: C3 (Signs of Very Minimal Use)
Came with: Original wooden box, manual
Notes: This rule is intended for handling problems associated with loading oil tankers
To facilitiate scanning, the locking screw visible in the lower photo,has been removed from the cursor and the slider beneath it.

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