Alvin 110-P Triangular 12" Architect Scale (West Germany)

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

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

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

Lot of 2 Alvin Triangle Scale Ruler Architect Germany 110P Pickett P-232E Japan

Vintage Alvin 110P Triangle Architect Drawing Scale Ruler 3 Sided

Alvin 12" Triangular Scale Ruler No 110P Architect Draft Blueprints Plans -White

Alvin 3 Sided Engineer Scale Ruler No 119 PC Triangular Drafting Architect 12"