Intoy 12 Inch Triangular Engineer Scale Ruler, Anodized Solid Aluminum Core With Laser Etched Scales, Imperial Scale - 1:10, 1:20, 1:30, 1:40, 1:50, 1

Alumicolor Aluminum Engineer Pocket Scale With Clip, 6IN, Black

Triangular Engineering Scale Aluminum Ruler For Architects, Engineers And Students (12 Inches)

STAEDTLER Engineer Aluminum Triangular Scale, 12in Metal Ruler With Color-Coded Grooves, Weather-Resistant, 6 Scales (10-60 Parts Per Inch)

Pacific Arc Engineer Triangle Scale Ruler 12 Inch With Etched Markings In Fully Divided 10, 20, 30, 40, 50, And 60 Parts To The Inch

12-Inch Architectural And Engineering Scale Ruler Set (Imperial) | Laser-Etched Aluminum Triangular Drafting Tool | For Architect And Civil Engineer

Kyuionty Engineer Scale Ruler 12 Inch, Aluminum Laser-Etched Triangular Drafting Tool For Civil Engineering Drafting, Imperial Scale 1:10, 1:20, 1:30,

STAEDTLER 12in Engineer Scale Ruler - Triangular Engineering Ruler With 6 Scales(10-60 Parts/Inch), Color-Coded Grooves, Plastic

Staedtler, Std987m1834bk, Prof-Quality Engineer's Triangular Scale, 1 Each, Silver

NOKKO 12 Inch Architectural And Engineering Scale Ruler Set - Professional Architect And Engineer Scale Rulers For Drafting, Architects, Engineers,

Staedtler Triangular Scale - 12", Engineer

Alumicolor Aluminum Engineer Color-Coded Solid Drafting Scale, 6IN, Silver

Engineer Scale Ruler 2 Pack 12-Inch Triangular Ruler Metal Scale Ruler For Blueprints Drafting Ruler For Civil Engineer, Draftsman

Staedtler Mars Student 12"L Engineer Triangular Scale (987 19-34BK)

Staedtler Professional Engineer's 12" Triangular Scale STD987M1834BK

Alvin 12" Impact Plastic Engineer Scale