Jason 803 Log Log Duplex Decitrig (rebranded Relay/Ricoh 151)

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Country of manufacture: Japan,            Date of manufacture: 1971
Overall length: 35.4 cm,          Width: 4.6 cm,           Weight: 132.0 gms
Materials: Celluloid laminate over bamboo, metal end braces, adjustable
Cursor: 3.0 X 5.8 X 1.0 cms; all plastic, adjustable; lines = single hairline, front and back
Scales: 25, extensions on A, B, C, D
Front: LL-1, LL-2, LL-3, DF [CF, CIF, CI, C] D, LL3, LL2, LL1
Back: LL-0, L, K, A [B, S, ST, T, C] D, DI, P, LL0
Gauge Marks: [π, C, ρ'', ρ', ρ^o, e, 1/e ]
Condition: C2-C3 (Mint to very minimal signs of use)
Came with: Original leather case

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