K&E 4080-3 040646 Log Log Duplex Trig

Country of manufacture: USA,            Date of manufacture: ____,            Ser. No.: 040646
Overall length: 31.8 cm,          Width: 4.1 cm,           Weight: 102.2 gms
Materials: Celluloid laminate over mahogany, metal end braces, adjustable
Cursor: 3.4 X 5.1 X 1.1 cms; plastic runners holding metal framed glass lens, adjustable; lines = single lines, front and back
Scales: 20, no extensions
Front: L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back: LL0, LL00, A [ B, T, ST, S ] D, DI, K
Gauge Marks: [π, e, //, /, 785 ]
Condition: C3-C4 (very minimal to minimal signs of use)
Came with: Mahogany wooden box