Graphoplex Slide Rule for Determining Weight of Steel Pipes

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Country of manufacture: France,            Date of manufacture: ____
Overall length: 15.3 cm,          Width: 4.5 cm,           Weight: 45.1 gms
Materials: alll plastic, closed form simplex
Cursor: 2.5 X 4.8 X 0.5 cms; metal runners holding plastic lens; lines = 3
Scales: 14
Front: 13 cm // P kg, B³, B² [ b², D-e mm, b ] B, Thickness mm, P kg
Back: Advertising, Application Formula
Slide Back: S&T, S, T, b
Well: blank
Gauge Marks: [ C (1128), ρ" (2063), π, ρ' (3438), ρ, (6366)]
Condition: C1 (Mint but some extras not necessarily mint)
Came with: Original black leather pocket slipcase

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