Faber Castell 8/168 Mobil Viscosity Slide Rule

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Country of manufacture: Germany,            Date of manufacture: ____
Diameter: 12.0 cm,          Thickness: 0.2 cm,           Weight: 29.8 gms
Materials: All plastic, 2 sided;           Cursor: all plastic, front side only
Scales: 8, most specialized
Front: C [ D ] Sec. Saybolt Universal, Sec. Redwood I [ °Fahrenheit, °Celcius ] °Engler, Centistokes
Back: Table: Weight/Volume Relationships of Petroleum Products at 60°F, Density-Temperature Diagram for Petroleum Products, Conversion Factors
Gauge Marks: [ π ]
Condition: C0-C1 (Mint, with all accessories in mint or close to mint condition)
Came with: Faux leather dark blue slipcase and instruction booklet (in German)

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