Aristo 939/n=15 Stahlbeton

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Country of manufacture: Germany,            Date of manufacture: ____
Overall length: 33.8 cm,          Width: 4.8 cm,           Weight: 127.0 gms
Materials: Plastic (PVC?) stators, slide, and end braces. End braces glued onto back, rubber bumpers on back
Cursor: 9.0 X 5.7 X 0.7 cms; aluminum runners holding plastic (plexiglass?) lens, adjustable; lines = complex; several lines & two scales on front
Scales: 14, specialized
Front: M [ b, σ_b, K, r ] h
Back: σ'_e, M [ b, σ_b, r ] z, x, h
Gauge Marks: [ π, C, C1 ]
Condition: C4 (minimal signs of use)
Came with: Original cardboard box/case

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