Staedtler Mars 544LL AV Overhead Projector Slide Rule

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Country of manufacture: Germany,            Date of manufacture: ____
Overall length: 33.1 cm,          Width: 17.0 cm,           Weight: ____ gms
Materials: all plastic
Cursor: 5.0 X 15.0 cms; all plastic; lines = 6
Scales: 21, no extensions
Front: L, K, A [ B, CI, C ] D, S, ST, T
Back: S, LL1, LL2, LL3
Gauge Marks: [ π, e, ρ (1745), C (1128)
Condition: C2 (Mint but no manual)
Came with: Original blue cardboard box

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