Vintage Sterling MFG Co. Triangular Scale Engineer Drafting Ruler white

This triangular scale is in good condition, it marked ‘STERLING’ on the scale, and ‘Alvin’ on the case.

12 Inch Architectural and Engineering Scale Ruler Set, Aluminum Triangular Drafting Tool with Metal Standard Ruler and 6 in 1 Tech Tool Pen for Architects, Draftsman and Engineers Drafting Blueprints : Office Products

Drafting Tools, Engineering, Science & Medicine (1930-Now), Collectibles - PicClick CA

Woodworking Measuring Ruler 45/90 Degree Triangle Scriber Square Protractor Aluminum Alloy Measuring Tool for Engineer Carpenter - AliExpress

Alvin, Combination Triangular Scale, Metric and English Measurements, White Drafting, Architecture and Drawing Ruler - 12 Inches : Drafting Tools : Office Products

Vintage Made in West Germany IONIC Wood Engineers Triangle Scale Drafting Ruler

Industrial Ruler Collection Architect Scale Vintage Measuring

See pictures for details.

Vintage 12 Sterling Triangular Engineer Drafting Scale Ruler Ivory white

Staedtler Engineers Printed Scale - Office Depot

Standard Imperial Measurements: This architect's ruler has 3 Sides & 6 Different Scales. Triple-sided scale included: 1-1/2, 1, 3/4, 3/8, 3/16,

Architectural Scale Ruler for Blueprint, 12'' Metric Metal Engineers Triangle Drafting Ruler with Imperial Measurements for Architects Engineering

ECYC 12 Triangular Scale Ruler 1:100/200/250/300/400/500 Plastic Engineering Mechanical Drafting Ruler : Office Products

Alvin 6 Plastic Engineer Triangular Scale Set

Staedtler Engineers Printed Scale - Office Depot

Drafting Tools, Engineering, Science & Medicine (1930-Now), Collectibles - PicClick CA

Lot of 3, 12 TRIANGULAR SCALE Ruler Architect, Engineer, Mechanical Drafting