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.

Alvin 6 Plastic Engineer Triangular Scale Set

The engineers ruler is in mint condition the architects has a little wear on the inch they are missing the end caps on both canisters.

Vintage 1972 Sterling Engineers & Architects Scale Triangular Ruler Lot X2

Vowcarol Architectural Scale Ruler, Engineering Scale and 12 inch Metal Ruler Set, Machinist Ruler Triangular Scale Drafting Ruler Architecture Ruler, Laser Etched Metal Scale Rulers-3 PCS : Office Products

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

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

Vintage Sterling MFG Co. Triangular Scale Engineer Drafting Ruler white

Triangle Ruler A.W. Faber Castell 853/Z1 Scale Drafting Tool Made in G

12 Combination Architect/Engineer Triangular Solid Scale - 3650

Alvin 110P 12 in. High Impact Plastic Architect Triangular Scale

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

Professional Grade for Supreme Accuracy Imperial Scales: 1:10, 1:20, 1:30, 1:40, 1:50, 1:60. Following US standard architect measurements, 3 sides

12 Inch Engineer Triangular Scale Ruler, Laser-Etched Solid Aluminum Engineer's Scale Ruler, Imperial Scale - 1:10, 1:20, 1:30, 1:40, 1:50, 1:60

WOODEN TRIANGULAR ENGINEER Drafting Scale Ruler -- Boxwood (2) $8.99 - PicClick

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