W. H. Smith Log-Log Trig Duplex, Ex. 2 (with K scale)

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Country of manufacture: England,            Date of manufacture: ____
Overall length: 33.0 cm,          Width: 4.6 cm,           Weight: 72.7 gms
Materials: all plastic (PVC), plastic end braces glued onto back of rule
Cursor: 3.5 X 5.0 X 0.7 cms; all plastic, slightly magnifying; lines = two on front only
Scales: 12, extensions on A, B, C, CI, D
Front: K, LL2, LL3, A [ B, L, CI, C ] D, S, T, ST
Back: Blank
Gauge Marks: [ π ]
Condition: C5 (Normal signs of use)
Came with: Nothing

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