Shop drafting scales for architecture, engineering, mechanical drafting, technical drawing, design layouts, and professional measurement applications. Drafting scales, triangular rulers, and triangular scale rulers are precision measuring tools used to create and read scaled drawings, construction plans, engineering layouts, and technical illustrations.
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12" Scholastic Combination Scale-1764130199
Alvin Drafting$6.10Our top-selling 12" triangular scales are perfect for school and vocational use, combining affordability with high quality. Made from durable high-impact plastic with a smooth satin finish and tapered edges, they provide comfort and longevity. The clear,... -
12" Scholastic Combination Scale-1764372305
Pacific Arc$5.00The Economy Scholastic Inch/Metric Scales provide budget-friendly options for students and those on tight budgets. Despite their affordable price, these white scales maintain durability and quality with their sturdy plastic construction. Designed for... -
12" Scholastic Mechanical Drafting Scale
Alvin Drafting$5.50Our 12" mechanical drafting triangular scales are ideal for school and vocational use, blending affordability with durability. Crafted from high-impact plastic with tapered edges and sharp, easy-to-read graduations, they ensure comfort and precision... -
12" Scholastic Mechanical Engineer Scale
Pacific Arc$4.95Economy triangular scales are white and ideal when budgets are at a minimum. High quality plastic promises strength and demonstrates long-lasting calibers.Mechanical Engineer GraduationsOpen divided: 1/8, 1/4, 1/2, and 1 inch to the foot;... -
12" Two-Bevel Mechanical Engineer Scale
Pacific Arc$9.30Classic 12" plastic two bevel plastic scale. Finely etched graduations for years of use. Scales: 1/16 and 1/32 size, Fully DividedMechanical Engineer Graduations Combo Fully Divided: 1/16 (192 ft) & 1/32 (384 ft) Features: Etched graduations... -
15cm Aluminum Metric Architect Pocket Scale
Alumicolor$5.45The Alumicolor Metric Architect pocket scale, compact and lightweight like a pen, offers portability and convenience for both students and professionals alike. Crafted from high-quality extruded aluminum, it ensures durability and precision in... -
15cm Four-Bevel Metric Scale
Pacific Arc$7.00The Pacific Arc 4-Bevel Flat Scales features finely etched graduations.Metric Graduations 1:1, 100, 20, 200, 5, 500, 1250, 2500 Features: Etched graduations on each beveled edgeConstructed from high impact plastic designed for longevity.Markings won't... -
15cm Metric Select-A-Scale
Alumicolor$11.85Alumicolor Metric Select-a-Scale are an ultra convenient and functional drafting tool that allows engineers to select multiple scales all in one product. The unique design incorporates a sculptured arch on the bottom for ease of movement. A rotating rod... -
24" Stainless Steel Flat Architect Scale
Pacific Arc$16.15Bullets Feature: Stainless Steel Etched graduations Accurate architectural measurements ARCH-III: 3/32, 3/16, 3/8, and 3/4 Inch increments Description A Pacific Arc original, constructed from solid stainless steel. ... -
30cm Aluminum Metric Architect 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... -
30cm Aluminum Metric Architect Triangular Scale-1764149815
Alvin & Co.$16.10High-quality anodized aluminum scales have a large profile, solid core, and tapered edges. Printed black graduations. Supplied in a hard plastic case.30cm metric scale with the following graduations: 1:500, 1:1000, 1:1250, 1:1500, 1:2000, 1:2500. -
30cm Aluminum Metric Architectural Scale
Alumicolor$9.15Alumicolor triangular Hollow Drafting Scales are made of extruded aluminum. The Alumicolor photo anodizing process makes the calibrations a part of the aluminum, providing a smooth, tick-free finish and markings that are resistant to cleaners and... -
30cm Color Coded Professional Metric Scale 05
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,... -
30cm Color-Coded Metric Architect Scale
Alumicolor$13.80Color Coded Drafting Scales are solid aluminum with a different color coded groove on each side (red, green, blue), easily identifying your calibrations. Calibrations are imprinted with Alumicolor's anodizing process. The anodizing process makes all... -
30cm Color-Coded Professional Metric Scale 06
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,... -
30cm English/Metric Mechanical Draftsmen Flat Scale
Alvin & Co.$8.9012"/30cm four-bevel mechanical draftsman scale made of aluminum. All graduations are double numbered. Full size – inches to 50ths and 32nds. Metric to 1mm. Supplied in vinyl sheath. -
30cm Four-Bevel Metric Architect Scale
Pacific Arc$9.30The 30cm (12") beveled metric scale is a high-precision tool designed for durability and accuracy. Featuring etched graduations on both edges, it provides reliable measurements that won’t fade or wear over time. Made from high-impact plastic, this sturdy... -
30cm Mechanical Draftsmen Scale
Alvin & Co.$11.70Professional-quality metric scales made from high-impact plastic with white, non-reflecting, matte faces and tapered edges. Hot-stamped graduations and color-coded furrows.Supplied in hard plastic case.Graduations: 1:2.5, 1:5, 1:10, 1:20, 1:50, 1:100 -
30cm Mechanical Draftsmen Scale-1764129254
Alvin & Co.$7.40Professional-quality metric scales made from high-impact plastic with white, non-reflecting, matte faces and tapered edges. Hot-stamped graduations and color-coded furrows.Supplied in hard plastic case.Graduations: 1:20, 1:25, 1:33 1/3, 1:50, 1:75, 1:100 -
30cm Mechanical Metric Color-Coded Scale
Alumicolor$13.80The 30cm color-coded metric mechanical drafting 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...
Types of Drafting Scales
Drafting scales are specialized measuring tools designed for reading, creating, and transferring scaled measurements in technical drawings and design layouts. This category includes architect scales, engineering scales, combination scales, mechanical drafting scales, metric scales, triangular rulers, ruler triangular designs, and triangular scale rulers used by architects, engineers, designers, students, and drafting professionals.
- Architect Scales: Support architectural floor plans, elevations, blueprints, and building design layouts using fractional scale systems
- Engineering Scales: Use decimal graduations for civil engineering, surveying, infrastructure layouts, and technical drawing applications
- Combination Scales: Combine multiple drafting scale systems into a single measuring tool for flexible drafting workflows
- Mechanical Drafting Scales: Provide specialty graduations and precision measurement systems used in mechanical and technical drawing applications
- Metric Scales: Support metric drafting, engineering layouts, international standards, and STEM education applications
- Triangular Rulers: Offer multiple scale graduations on a compact three-sided ruler design for efficient drafting and measurement work
- Triangular Scale Rulers: Help users quickly switch between multiple drafting scales while maintaining accurate layout measurements
Understanding Drafting Scales
Drafting scales are essential tools used to convert real-world dimensions into scaled technical drawings and layouts. Architects, engineers, designers, and drafters use scale rulers to accurately read and create drawings that represent buildings, infrastructure, machinery, products, and technical systems at reduced or enlarged sizes.
Triangular rulers remain one of the most popular drafting scale formats because they allow multiple scale graduations to be combined into a compact and efficient measuring tool. A triangular scale ruler helps streamline drafting workflows by allowing users to switch quickly between different scale systems without changing tools.
Drafting Scales in Architecture & Engineering
Different drafting disciplines rely on different scale systems. Architect scales commonly use fractional measurements found in building plans and construction drawings, while engineering scales use decimal graduations often preferred for civil engineering and technical layouts.
Mechanical drafting scales and metric scales support additional technical applications requiring specialized graduations and international measurement standards. Using the proper drafting scale improves layout accuracy, readability, and consistency throughout technical drawing workflows.
Choosing the Right Triangular Scale Ruler
When selecting drafting scales, consider the drafting discipline, graduation system, material, edge style, and intended application. Triangular rulers are popular because they provide multiple scale systems in a single compact tool, while flat drafting scales may offer larger graduations and easier readability for specific workflows.
Professional drafting scales are designed with accurate graduations, durable materials, and clear markings that remain readable during repeated technical use. Choosing the correct scale ruler helps improve measurement accuracy and workflow efficiency in drafting, architecture, engineering, and design environments.
Complete Your Drafting Workspace
Pair drafting scales with drafting pencils, technical pens, triangles, templates, and drafting paper for accurate technical drawings and professional layout applications.
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