K&E 4080-5 Log Log Duplex Trig

Country of manufacture: USA,            Date of manufacture: ____,            Ser. No.: 209770
Overall length: 56.7 cm,          Width: 4.1 cm,           Weight: 175.9 gms
Materials: Celluloid laminate over mahogany, metal end braces, adjustable
Cursor: 3.0 X 5.1 X 1.3 cms; plastic runners holding metal framed glass lens, adjustable; lines = single lines, front and back
Scales: 21, no extensions
Front: LL02, LL03, DF [CF, CIF, CI, C] D, LL3, LL2
Back: LL01, L, K, A [B, T, ST, S] D, DI, LL1
Gauge Marks: [π, /, //, 785, e, 1/e ]
Condition: C3-C4 (very minimal to minimal signs of use; replaced missing glass cursor window, back side)
Came with: Original orange leather case