SIC 151 (rebranded Relay 151)
Country of manufacture: Japan, Date of manufacture: 1961
Overall length: 35.4 cm, Width: 4.7 cm, Weight: 151.6 gms
Materials: Celluloid laminate over bamboo, metal end braces, adjustable
Cursor: 3.0 X 5.8 X 1.1 cms; all plastic, adjustable; lines = single line, 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, e, 1/e, ρ'', ρ', ρo, ρ,, ]
Condition: C4-C5 (minimal to normal signs of use)
Came with: Original light brown leather case, closure strap retainer missing