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2 Enginner & 1 Architect 12" Triangular Drafting Scale Rulers Alvin W.T. Rogers

Vintage Triangular Engineering Drafting Scale Ruler West Germany Plastic

Alvin No. 110P Precise Triangle Architect Drafting Scale Ruler West Germany 12".

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Alvin No. 110P Precise Triangle Architect Drafting Scale Ruler West Germany 12"

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Alvin No. 110P Precise Triangle Architect Drafting Scale Ruler West Germany 12"