Sans & Streiffe 311 Log Log Duplex (same as Relay/Ricoh 150)

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Country of manufacture: Japan,            Date of manufacture: 1968
Overall length: 32.1 cm,          Width: 4.1 cm,           Weight: 107.7 gms
Materials: Celluloid laminate over bamboo, metal end braces, adjustable
Cursor: 3.0 X 5.2 X 1.0 cms; all plastic, adjustable; lines = single line, front and back
Scales: 21, no extensions
Front: L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back: LL0, LL00, A [ B, K, CI, C ] D, S, ST, T
Gauge Marks: [π, C, e, ρ^o ]
Condition: C4-C5 (minimal to normal signs of use)
Came with: Original brown leather case

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