Graphoplex 690 Duplex

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Country of manufacture: France,            Date of manufacture: ____
Overall length: 33.5 cm,          Width: 4.6 cm,           Weight: 125.9 gms
Materials: all plastic (PVC), glued-on end braces on back
Cursor: 3.9 X 5.5 X 0.9 cms; all plastic, adjustable; lines = one on front; three on back
Scales: 23, no extensions
Front: LL01, LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Back: L, P, AI, A [ B, T, S&T, S ] D, DI, K
Gauge Marks: [π, e, ρ_,,, ρ', ρ'' ]
Condition: C3-C4 (Very minimal to minimal signs of use)
Came with: Original brown cardboard box/case

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