Faber Castell 342 Columbus, System Rohrberg Commercial Slide Rule, Variant 2

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Country of manufacture: Germany,            Date of manufacture: 1924
Overall length: 38.5 cm,          Width: 5.1 cm,           Weight: 217.9 gms
Materials: Simplex design, celluloid lamimate over wood
Cursor: 5.0 X 4.7 X 0.6 cms; aluminum franed glass lens; lines = three hairlines on front only
Scales: 10
Front: 37 cm // D (0.8 to 3.6) [ C (0.8 to 3.6), CI (4.0 to 1.0), CI (12.5 to 3.2), C (2.5 to 11.0) ] D (2.5 to 11.0)
Slide Back: German/English currency conversion scales (3)
Well: blank
Gauge Marks: [     ]
Back: (in German) Conversion Factors; Foreign Dimensions, Weights, and Measures; Length Conversions; Weight Cpmbersions; Countries with Decimal Currency; Countries with non-Decimal Currency
Condition: C3-C4 (Very Minimal to Minimal Signs of Use)
Came with: Original 2-part black cardboard case

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