Engineer's 1500 Decitrig Log Log Duplex (same as Relay 150)

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Country of manufacture: Japan,            Date of manufacture: 1969
Overall length: 31.9 cm,          Width: 4.1 cm,           Weight: 124.7 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, e, ρ'', ρ', ρ^o, C ]
Condition: C4-C5 (minimal to normal signs of use)
Came with: Original light brown leather case, embossed "Engineer's 1500"

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