SIC 1580 Electro Vector Log Log Decatrig (same as Relay DE-1008 and Relay 158)

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Country of manufacture: Japan (Relay/Ricoh),            Date of manufacture: ____, Serial No. 40167
Overall length: 35.2 cm,          Width: 4.7 cm,           Weight: 147.5 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 line front and back, scales annotated on cursor
Scales: 26, extensions on A, BI, C, D
Front: Sh2, Sh1, Th, A [ BI, S, T, CI, C ] D, LL3, LL2, LL1
Back: X2, X1, P2, P1 [ Q, Y, L, L^x, I ] I, L^θ1, L^θ2, L^Y
Gauge Marks: [ π, C, e, 2π, ρ^o ]
Condition: C2 (Mint but no manual)
Came with: Original cardboard box, brown leather case

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