K&E 4088-3 Polyphase Duplex

Country of manufacture: USA,            Date of manufacture: ____, Ser. No.: 343263
Overall length: 31.0 cm,          Width: 2.9 cm,           Weight: 69.2 gms
Materials: Celluloid laminate over mahogany, metal end braces, adjustable
Cursor: 2.9 X 4.0 X 1.2 cms; plastic runners, metal framed glass lens, adjustable; lines = single hairline, front and back
Scales: 13, no extensions
Front: DF [ CF, CIF,C ] D
Back: K, A [ B, SD, T, CI ] D, L
Gauge Marks: [π, 785 ]
Condition: C5 (signs of normal use)
Came with: Original brown leather case, missing tiop flap