Vintage Triangular Ruler Dietzgen 31636 - Engineering Tool - Drafting Ruler on eBid United States

Vintage Triangular Ruler Dietzgen 31636 - Engineering Tool - Drafting Ruler Listing in the Drafting Tools,Engineering & Surveying,Science & Medicine (1930-Now),Collectibles Category on eBid United States | 217398326

Engineer's Drafting triangular scale ruler Rotring - Ruby Lane

Dietzgen Rulers

SagaSave Triangular Scale Ruler with 6 Different Scales Measuring Tool for Architect Draftsman Student Supreme Accuracy

Vintage Ekco Slotted Spatula + Slotted Spoon - Spice of Life - Mushroom Tomato on eBid United States

Kyuionty Engineer Scale Ruler 12 Inch, Solid Aluminum Laser-Etched Triangular Engineering Ruler Drafting Tool with Color - Coded Grooves, Imperial Scale 1:10, 1:20, 1:30, 1:40, 1:50, 1:60 (Black) : Office Products

National Museum of American History

Triangular Engineering Scale Aluminum Ruler for Architects, Engineers and Students (12 Inches)

Tri scale ruler - vintage hardwood, USA made – shopjunket

Dietzgen Rulers

National Museum of American History

Draf 12 inch Architectural and Engineering Imperial Scale Ruler Set - Laser-etched Aluminum Triangular Drafting Tool - for Architect and Civil