Dietzgen 1731 Maniphase Multiplex Trigonometric Type Log Log

Country of manufacture: USA,            Date of manufacture: ____, Ser. No.: 400185
Overall length: 32.0 cm,          Width: 4.0 cm,           Weight: 117.3 gms.
Materials: Celluloid laminate over wood, metal end braces, adjustable
Cursor: 3.1 X 5.1 X 1.1 cms; metal framed glass lens; lines = single hairline, front and back
Scales: 20, no extensions
Front: LL02, LL03, DF [CF, CIF, CI, C] D, LL3, LL2
Back: LL01, K, A [B, T, ST, S] D, L, LL1
Gauge Marks: [π, e, /, //, A ]
Condition: C4 (Minimal signs of use)
Came with: Original leather case, manual, conversion tables