Dietzgen Plastic Triangular Scale Ruler 1667BG Engineering w/ Plastic Case

Vintage Dietzgen #1667-BG Map Measure Drafting 12" Triangle Scale Japan

Vintage K&E Architect's Triangular # 1621 W Drafting Ruler / Scale

2 Vintage Triangular Scale Ruler Engineer Divided Eugene Dietzge 1626 Germany

12" architect scale ruler DIETZGEN 1667 BP, 21626, yellow color

Dietzgen 12" Triangle Ruler 1667-BG made in Germany and Graph Paper made in USA

K&E 1621W TRIANGULAR RULER Vintage ARCHITECT SCALE Star Quality KEUFFEL & ESSER

K&E 1621W PARAGON RULER Drafting ARCHITECT SCALE Star Quality KEUFFEL ESSER K&E