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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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... -
12" Scholastic Architectural 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" Flat Pocket Architect Scale
Alvin Drafting$6.80The Alvin Drafting 6" Plastic Architect Scale is a professional-grade ruler ideal for students and professionals in engineering and architecture, featuring six different scales for accurate measurements. Crafted from high-quality plastic alloy with... -
12" Hollow Aluminum Architect Scale
Alumicolor$9.15Alumicolor 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" Color-Coded Architectural Scale
Alvin Drafting$11.60Crafted from high-impact plastic, these professional-quality architectural 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... -
6" Aluminum Architects Scale (Left to Right)
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... -
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" Color-coded Professional Architect Scale
Pacific Arc$9.10The Professional Premium Plastic Architectural 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,... -
12" Architectural 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... -
12" Architectural Solid Aluminum 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" Architect Select-A-Scale
Alumicolor$15.70Alumicolor 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... -
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" Four-Bevel Architect Joist/Truss Scale-1764170275
Alumicolor$10.75Alumicolor Joist/Truss Scales are accurate, quality 4 bevel scales, which will be a BIG hit with architects, builders, roofers, framers and lumber yards. The (1", 1/2") scales are frequently used for measuring large scale drafting plans... -
12" L2R Aluminum Architects Flat Scale
Alumicolor$10.75L2R Architect Scales were developed with calibrations that read from left to right only. This makes it easier to read than traditional architect scales, which read from left to right and right to left. The Alumicolor photo anodizing process... -
18" Hollow Aluminum Architectural Scale
Alumicolor$16.35Alumicolor 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. ... -
4" Architect Plastic Mini Scale
Pacific Arc$9.40The Professional Premium Plastic Triangular 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 drafting tasks... -
4" Pocket Aluminum Architect Scale
Alvin Drafting$10.80This 4" professional pocket architects 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... -
6" Aluminum Left-to-Right Architect Pocket Scale
Alumicolor$5.95Alumicolor 6" Pocket Scales are a smaller version of the 12" professional solid scale. The pen-size, lightweight design provides professionals and students with a scale that can be taken anywhere. L2R Architect Scales were developed with calibrations... -
6" Color-Coded Architectural Scale
Alvin Drafting$7.10Crafted from durable, high-impact plastic with a soft satin finish, this 6" pocket architect scale ensures accuracy. Its clear, easy-to-read graduations, resistant to wear, feature metric measurements for added convenience. Perfect for architects,... -
6" Pocket Aluminum Architectural Scale
Alumicolor$5.45The 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 measurements. Utilizing a photo...
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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