Drafting Scales

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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  • 15cm Aluminum Metric Architect Pocket Scale 15cm Aluminum Metric Architect Pocket Scale

    15cm Aluminum Metric Architect Pocket Scale

    Alumicolor
    $5.45
    The 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...
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    $5.45
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  • 15cm Metric Select-A-Scale 15cm Metric Select-A-Scale

    15cm Metric Select-A-Scale

    Alumicolor
    $11.85
    Alumicolor 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...
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    $11.85
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  • 30cm Aluminum Metric Architect Triangular Scale 30cm Aluminum Metric Architect Triangular Scale

    30cm Aluminum Metric Architect Triangular Scale

    Alumicolor
    $13.00
    Alumicolor 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...
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    $13.00
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  • 30cm Aluminum Metric Architectural Scale 30cm Aluminum Metric Architectural Scale

    30cm Aluminum Metric Architectural Scale

    Alumicolor
    $9.15
    Alumicolor 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...
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    $9.15
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  • 30cm Color-Coded Metric Architect Scale 30cm Color-Coded Metric Architect Scale

    30cm Color-Coded Metric Architect Scale

    Alumicolor
    $13.80

    (1)

    Color 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...
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    $13.80
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  • 30cm Mechanical Draftsmen Scale

    30cm Mechanical Draftsmen Scale

    Alvin & Co.
    $11.70

    (1)

    Professional-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...
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    $11.70
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  • 30cm Mechanical Draftsmen Scale-1764129254

    30cm Mechanical Draftsmen Scale-1764129254

    Alvin & Co.
    $7.40

    (1)

    Professional-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...
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    $7.40
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  • 30cm Mechanical Metric Color-Coded Scale 30cm Mechanical Metric Color-Coded Scale

    30cm Mechanical Metric Color-Coded Scale

    Alumicolor
    $13.80
    The 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...
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    $13.80
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  • 30cm Metric Architect Scale 06

    30cm Metric Architect Scale 06

    Pacific Arc
    $6.05
    The 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,...
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    $6.05
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  • 30cm Metric Select-A-Scale 30cm Metric Select-A-Scale

    30cm Metric Select-A-Scale

    Alumicolor
    $15.70

    (1)

    Alumicolor 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...
    Qty in Cart: 0
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    $15.70
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  • 30cm Professional Metric Scale 01 30cm Professional Metric Scale 01

    30cm Professional Metric Scale 01

    Pacific Arc
    $6.05

    (1)

    The 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,...
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    $6.05
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  • 30cm Scholastic Metric Scale 30cm Scholastic Metric Scale

    30cm Scholastic Metric Scale

    Alvin Drafting
    $5.50
    These 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,...
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    $5.50
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  • 4" Architect Color-Coded Scale 4" Architect Color-Coded Scale

    4" Architect Color-Coded Scale

    Alumicolor
    $7.65
    The 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,...
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    $7.65
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  • 4" Engineer Color-Coded Scale 4" Engineer Color-Coded Scale

    4" Engineer Color-Coded Scale

    Alumicolor
    $7.65
    The 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,...
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    $7.65
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  • 6" Aluminum Engineer Scale 6" Aluminum Engineer Scale

    6" Aluminum Engineer Scale

    Alumicolor
    $7.20

    (3)

    Alumicolor 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,...
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    $7.20
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  • 6" Architect Color-Coded Scale 6" Architect Color-Coded Scale

    6" Architect Color-Coded Scale

    Alumicolor
    $8.30
    Crafted 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...
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    $8.30
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  • 6" Architect Select-A-Scale 6" Architect Select-A-Scale

    6" Architect Select-A-Scale

    Alumicolor
    $11.85

    (1)

    Alumicolor 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...
    Qty in Cart: 0
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    $11.85
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  • 6" Architect Triangular Scale 6" Architect Triangular Scale

    6" Architect Triangular Scale

    Pacific Arc
    $9.50
    Professional Premium Plastic Triangular Scales - Color Coded Premium plastic ore triangular scales provide precise graduation etched on premium white color-coded plastic for exact performance...
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    $9.50
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  • 6" Engineer Color-Coded Scale 6" Engineer Color-Coded Scale

    6" Engineer Color-Coded Scale

    Alumicolor
    $8.30
    Crafted 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,...
    Qty in Cart: 0
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    $8.30
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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.

Shop Drafting Pencils & Leads | Shop Technical Pens | Shop Drafting Triangles | Shop Drafting Templates | Shop Drafting Paper