Shop engineer scales for civil engineering, surveying, technical drawing, blueprint reading, and drafting applications. Engineering scale rulers and triangular engineer scales help create and interpret scaled technical plans, infrastructure drawings, and engineering layouts.
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6" Protractor Ruler - 20 & 40 Parts to Inch
Westcott$3.60Combination protractor/scale/ruler for fast preliminary layouts. Graduations designed for civil engineers, surveyors, and general use. Features: 180 degree protractor with 20ths and 40ths to the inch scalesTransparent plasticLaminated... -
6" Four-Bevel Engineer Scale
Pacific Arc$7.00This Pacific Arc 6" Engineer Scale features premium high-impact plastic and finely etched graduations.Engineer Graduations:Fully Divided: 10, 20, 40, 50 parts to the inchFeatures: Etched graduations on each beveled edgeConstructed from high impact... -
12" Scholastic Engineer Scale
Pacific Arc$4.95The Economy Scholastic Triangular Engineer Scales present a cost-effective solution tailored for students and individuals with constrained budgets. These white scales are optimal for scenarios requiring frugality, offering indispensable functionality... -
12" Hollow Aluminum Engineer Scale
Alumicolor$9.15Alumicolor triangular Engineer Drafting Scales are made of extruded aluminum. Alumicolor's photo anodizing process makes the calibrations a part of the aluminum, providing a smooth, tick-free finish and markings which are resistant to cleaners and... -
4" Mini Aluminum Engineer Triangular Scale
Alvin Drafting$12.30This 4" professional pocket engineer scale, crafted from solid aluminum, ensures both lightweight portability and durability for on-the-go use. Its tapered edges and color-coded furrows enhance ease of use, while the included vinyl sheath provides... -
12" Engineer Triangular Scale
Alvin Drafting$10.60Crafted from high-impact plastic, these professional-quality engineering scales feature white, non-reflective matte faces and tapered edges for enhanced precision. They boast machine-engraved graduations and color-coded furrows for easy readability. Each... -
12" Scholastic Engineering Scale
Alvin Drafting$6.10Our most popular series of 12" triangular scales is highly recommended for scholastic and vocational use due to its budget-friendly pricing and exceptional quality. Crafted from high-impact plastic with a satin finish and tapered edges, these scales... -
6" Drafting Fan
Alumicolor$14.40The Alumicolor® Drafting Fan is another convenient all-in-one tool made from aluminum that has all standard Architect, Engineer and Metric scales used in the industry. 8 blades of aluminum sheet, riveted together giving you a compact tool... -
6" Protractor Ruler - 10 & 50 Parts to Inch
Westcott$4.00Thin plastic combination protractor/scale/ruler for fast preliminary layouts. Features:Graduations designed for civil engineers, surveyors, and general use.180 degree protractor6" rulerInch in 10ths/50ths -
12" Black Aluminum Engineering Scale
Alvin & Co.$18.00High-quality, black anodized aluminum scales have a large profile, hollow core, and tapered edges. Printed white graduations and color inlaid furrows. Supplied in hard plastic case. Graduations: 10, 20, 30, 40, 50, 60 parts to the inch.Made in Italy -
12" Engineering Aluminum Color-Coded Triangular Scale
Alumicolor$13.80Alumicolor 12" Color-Coded Drafting Scales are made of solid aluminum and feature distinct color-coded grooves on each side (red, green, blue) for easy identification of calibrations. These calibrations are imprinted using Alumicolor's anodizing process,... -
12" Engineering Aluminum Solid Triangular Scale
Alumicolor$13.00Alumicolor Triangular Drafting Scales are made of extruded aluminum. Alumicolor's photo anodizing process makes the calibrations a part of the aluminum, providing a smooth, tick-free finish and markings which are resistant to cleaners and solvents... -
12" Scholastic Color-Coded Engineer Scale
Pacific Arc$5.90Scholastic Engineers Triangular Scale - Color Coded Scholastic triangular scale are color coded for easy use.Engineer GraduationsFully divided: 10, 20, 30, 40, 50, & 60 parts to the inchFeatures: 12" Engineer ScaleHigh quality - Hard PlasticColor-Coded... -
18" Hollow Aluminum Engineer Scale
Alumicolor$16.35Alumicolor Engineer Drafting Scales are made of extruded aluminum. Alumicolor's photo anodizing process makes the calibrations a part of the aluminum, providing a smooth, tick-free finish and markings which are resistant to cleaners and solvents. These... -
30cm Metric Engineer Color-Coded Scale
Alumicolor$13.80The 12" color-coded Metric Engineer solid triangular scale, crafted from premium extruded aluminum, features exceptionally smooth edges. Each side is distinguished by a unique color-coded groove, facilitating easy identification of your calibrations... -
30cm Metric Engineering Scale 02
Pacific Arc$9.30The Professional Premium Plastic Metric Triangular Scales, crafted in Japan, provide precise graduations on premium white color-coded plastic for accurate performance. With a high-quality plastic core, these scales ensure durability and strength,... -
4" Engineer Plastic Mini Scale
Pacific Arc$9.40The Professional Premium Plastic Triangular Engineer Scales boast precision and convenience with their color-coded design and premium plastic core. Etched graduations on the white plastic surface ensure accurate measurements for architectural and... -
12" Aluminum Engineering Scale
Alumicolor$10.75Alumicolor Architect and Engineer Four Bevel Scales are precision measuring and drawing devices. Alumicolor's photo anodizing process make the calibrations a part of the aluminum providing a smooth, tick-free finish and markings that will resist wear and... -
12" Color-Coded Engineering Scale
Alvin Drafting$11.70Alvin Drafting offers professional-quality engineer scales crafted from durable high-impact plastic. Featuring non-reflective matte faces in white and tapered edges, these scales ensure clarity and precision. The machine-engraved graduations and... -
12" Color-coded Professional Engineer Scale
Pacific Arc$9.10The Professional Premium Plastic Engineer Triangular Scales, crafted in Japan, provide precise graduations on premium white color-coded plastic for accurate performance. With a high-quality plastic core, these scales ensure durability and strength,...
Types of Engineering Scales
Engineer scales are specialized drafting rulers designed for decimal-based measurement systems and scaled technical drawing applications. This category includes civil engineer scales, engineer triangular scales, engineer pocket scales, scholastic engineer scales, and professional drafting scales used by engineers, surveyors, designers, students, and drafting professionals.
Engineering scales are available in aluminum, stainless steel, and durable plastic designs for classroom, office, field, and professional drafting environments.
- Triangular Engineer Scales: Combine multiple engineering scale graduations into a compact three-sided drafting ruler
- Flat Engineering Rulers: Offer larger graduations and improved readability for classroom, office, and field applications
- Civil Engineer Scales: Support decimal-based layouts, surveying applications, infrastructure plans, and technical drawings
- Engineer Pocket Scales: Provide portable measurement tools for field work, site visits, and mobile drafting applications
- Scholastic Engineer Scales: Provide easy-to-read graduations for students, STEM education, classroom drafting, and introductory engineering applications
- Professional Engineering Scales: Feature precision graduations and durable materials designed for repeated technical use
Understanding Engineering Scale Systems
Engineering scales use decimal-based measurement systems to convert real-world dimensions into scaled technical drawings and layouts. Unlike architect scales, which commonly use fractional scales, engineer scales are typically graduated in divisions such as 10, 20, 30, 40, 50, and 60 parts per inch for civil engineering and technical layout applications.
Engineer triangular scales remain popular because they combine multiple engineering graduations into one compact measuring tool, allowing quick transitions between different scales during drafting and layout work. Professional engineers and surveyors often prefer triangular engineer scales because they are easy to use across office, classroom, and field environments.
Common Engineering Scale Graduations
Engineering scale rulers commonly include decimal graduations used for civil drawings, site plans, mapping, and technical layouts.
- 10 Scale: Used for drawings where each inch is divided into 10 equal parts
- 20 Scale: Common for site plans, civil layouts, and larger-scale technical drawings
- 30 Scale: Often used for engineering drawings, mapping, and infrastructure layouts
- 40 Scale: Useful for technical plans requiring additional decimal scale options
- 50 Scale: Supports larger civil and engineering layouts where reduced drawing size is needed
- 60 Scale: Common on triangular engineer scales for broader engineering and drafting applications
Choosing the Right Engineering Scale Ruler
When selecting an engineer scale, consider the graduation system, ruler format, material, portability, and intended application. Triangular engineering scales provide multiple scale systems in a compact design, while flat engineering rulers may offer improved readability for certain workflows.
Professional engineering scale rulers are available in aluminum, plastic, and stainless steel for classroom, office, field, and drafting applications. Engineer pocket scales are especially useful for portable measurement tasks and mobile engineering workflows.
Complete Your Engineering Drafting Workspace
Pair engineering scales with drafting pencils, drafting triangles, technical pens, templates, and drafting paper for accurate technical layouts and professional engineering drafting applications.
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