K&E 4139 Cooke Radio Rule, Example 3

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Country of manufacture: USA,            Date of manufacture: ____, Ser. No.: 929755
Overall length: 30.9 cm,          Width: 3.3 cm,           Weight: 79.8 gms
Materials: Celluloid laminate over mahogany, metal end braces, adjustable
Cursor: 2.5 X 4.3 X 1.2 cms; plastic runners, metal framed glass lens, adjustable; lines = single hairline, front and back
Scales: 16, no extensions
Front: L, DF [ CF, CIF, CI, C ] D, 2π
Back: LC, A [ B, T, ST, S ] D, DI
Gauge Marks: [π, //, /, 785, R ]
Condition: C3 (Very Minimal signs of use)
Came with: Black leather case

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