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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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... -
30cm Metric Architect Scale
Pacific Arc$5.90Scholastic Metric Triangular Scale - Color-Coded Scholastic triangular scale are color coded for easy use. Metric Graduations1:100, 200, 250, 300, 400, 500Features: 12" Scholastic Metric ScaleHigh quality - Hard PlasticColor-Coded Grooves - for quick... -
30cm Metric Architect Scale 06
Pacific Arc$5.90The Professional Premium Plastic Triangular Metric Scales, made in Japan, offer precise etched graduations and enduring strength. With their slender core design and high-quality plastic construction, these scales ensure accuracy and durability for... -
30cm Metric Drafting Scale
Alvin Drafting$10.60Alvin Drafting offers professional-quality metric drafting 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... -
30cm Metric Select-A-Scale
Alumicolor$15.70Alumicolor 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... -
30cm Professional Metric Scale 01
Pacific Arc$5.90The Professional Premium Plastic Triangular Metric Scales, made in Japan, offer precise etched graduations and enduring strength. With their slender core design and high-quality plastic construction, these scales ensure accuracy and durability for... -
30cm Scholastic Metric Scale
Alvin Drafting$5.50These 12" triangular metric architect 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... -
30cm Solid Aluminum Metric Triangular Scale
Fairgate$12.70Rugged, professional-quality scales are made from anodized aluminum with a solid core. Features: Scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125. Printed black graduations on non-glare finish Color-coded furrows. Shrink-wrapped. -
4" Architect Color-Coded Scale
Alumicolor$7.65The 4" color-coded architect 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... -
4" Engineer Color-Coded Scale
Alumicolor$7.65The 4" color-coded solid triangular engineer 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... -
6" Aluminum Engineer Scale
Alumicolor$7.20Alumicolor 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... -
6" Architect Color-Coded Scale
Alumicolor$8.30Crafted from high-quality extruded aluminum, the 6-inch color-coded architect solid triangular scale boasts ultra-smooth edges for precision. Each side is marked with a distinctive color-coded groove, making it effortless to identify and calibrate... -
6" Architect Select-A-Scale
Alumicolor$11.85Alumicolor Architect Select-a-Scale are an ultra convenient and functional drafting tool that allows architects to select multiple scales all in one product. The unique design incorporates a sculptured arch on the bottom for ease of movement. A rotating... -
6" Architect Triangular Scale
Pacific Arc$9.10Professional Premium Plastic Triangular Scales - Color Coded Premium plastic ore triangular scales provide precise graduation etched on premium white color-coded plastic for exact performance.Architect GraduationsOpen divided: 3/32, 3/16, 1/8, 1/4, 3/8,... -
6" Color-Coded Architect Scale
Pacific Arc$6.20The Pacific Arc Collegiate Plastic Architect Triangular Scales offer color-coded quality for accurate performance on a budget. Made with high-quality heavy plastic, these scales are ideal for drafting, architects, or students on the go. The... -
6" Engineer Color-Coded Scale
Alumicolor$8.30Crafted from high-quality extruded aluminum, the 6-inch color-coded engineer solid triangular scale boasts ultra-smooth edges for precision. Each side is marked with a distinctive color-coded groove, making it effortless to identify and calibrate... -
6" Engineer Select-A-Scale
Alumicolor$11.85Alumicolor Engineer 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...
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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