DIETZGEN 31626 ENGINE DIVIDED TRIANGULAR WOODEN RULER

Dietzgen “31626” Engine Divided Wooden Triangular 12” Scale

DIETZGEN Architecht Engine Divided Triangular Scale Ruler Engineer 31626 VINTAGE

Vintage Dietzgen No. 31626 Wooden 3-Sided Triangular Scale Ruler--for drafting

Vintage DIETZGEN 31626 Triangular Drafting Architects Scale Wood Ruler

Vintage Dietzgen 31626 Engine Divided 12" Triangular Scale Ruler

Vintage Triangle Ruler - DIETZGEN ENGINE DIVIDED 31626, USA

Triangular Ruler Vintage Wood Dietzgen 31626 Architect 12” U.S. STD