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Alvin 240-P Triangular 12" Architect Scale (West Germany)

Alvin No. 110P Architect Rule W-Germany

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

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Architect Triangular Scale Ruler 12" Model 110P White with Black Graduations, Ar

ALVIN 110P High Impact Plastic Architect Triangular Scale , Drawing Drafting....