Alvin 740PM 12 Inch Architect Combination Triangular Scale West Germany in Tube

Vintage Alvin 975J Made in Germany 6" Jet Bow Compass "Look"

Alvin 740PM 12 Inch Architect Combination Triangular Scale West Germany in Tube

Alvin Professional Grade #131C 45/90 Degree 8 Inch Acrylic Triangle Brand New

12 Inch Architect Scale Ruler, Aluminum Metric Triangular Scale Ruler for for...

Alvin Protractor West Germany Chrome Finish VINTAGE

Alvin 240B 12 Inch Architect Triangular Scale Germany and Office Depot Ruler

Vintage Alvin 795 B Basic-Bow Precision Drawing Instruments Set Made in Germany