Vintage Alvin No 280x Boxwood Architect Scale Divided West Germany w/Sleeve

Vintage Alvin #269 Boxwood Ruler Engine Divided W/ Case - W Germany *READ*

Alvin No. 280 Engine Divided Ruler West-Germany Vintage See Photos & Description

Alvin 3 Sided Engineer Scale No 119 PC Triangular Drafting Ruler W-Germany

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

VNT Alvin Architectural Drafting Ruler 232 Divided Pearwood W. Germany NOS

VINTAGE W & G ENGINEERING RULER - MODEL No. WG/P21 - MADE IN AUSTRALIA

W & G Made in Australia WG/ 112 Engine Divided Ruler Drafting With sleeve