Ruling & Measuring Tools

Shop drafting rulers, scales, and measuring tools for technical drawing, engineering, architecture, drafting, geometry, and layout applications. Precision measuring tools help create accurate dimensions, straight lines, scaled drawings, and controlled layouts for professional drafting and design workflows.


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  • Clear Acrylic Ruler Clear Acrylic Ruler

    Clear Acrylic Ruler

    Alvin Drafting
    $4.40 - $5.50
    Scratch-resistant, super-clear acrylic with raised edge to prevent smearing. Scaled 1/16" on one edge, metric on opposite edge, blank spaces at ends for easier measuring, plumb line at each end...
    Qty in Cart: 0
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    $4.40 - $5.50
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  • Plastic T-Squares Plastic T-Squares

    Plastic T-Squares

    Helix
    $5.10 - $10.20

    (2)

    A t-square is an invaluable tool for drafting, drawing, technical projects and anything that requires a straightedge. This tool features both standard and metric scales.Features: Made of clear,...
    Qty in Cart: 0
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    $5.10 - $10.20
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  • 12" Hollow Aluminum Architects Scale 12" Hollow Aluminum Architects Scale
    SALE
    SALE

    12" Hollow Aluminum Architects Scale

    Alvin Drafting
    SALE: $5.50
    WAS: $10.60
    This hollow architectural aluminum scale from Alvin is a durable, high-quality scale made of extruded aluminum. Photo anodized calibrations are a part of the aluminum, providing a smooth, tick-free...
    Qty in Cart: 0
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    SALE: $5.50
    WAS: $10.60
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  • 14" Professional Parallel Glider 14" Professional Parallel Glider

    14" Professional Parallel Glider

    Alvin Drafting
    $35.60

    (9)

    An easy-to-use instrument that combines the functions of a parallel straightedge triangle protractor T-square and compass in one. One of the most useful and convenient aids for drafting drawing and...
    Qty in Cart: 0
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    $35.60
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  • 6" Inch/Metric Pocket Rule

    6" Inch/Metric Pocket Rule

    Alvin Drafting
    $4.30
    6" Stainless Steel Inch/Metric Pocket RuleFeatures: Stainless Steel Etched Graduations Graduated in mm to 15cm and inches to 32nds Pocket clip doubles as depth gauge Fraction/decimal...
    Qty in Cart: 0
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    $4.30
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  • Plastic Vernier Caliper Plastic Vernier Caliper

    Plastic Vernier Caliper

    Pacific Arc
    $4.40
    The Pacific Arc plastic Vernier Caliper is made to assist in any home project or DIYs. This caliper can measure the external or internal diameter of an object, and also provides the depth of an...
    Qty in Cart: 0
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    $4.40
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  • Portable Drawing Board with T-Square Portable Drawing Board with T-Square

    Portable Drawing Board with T-Square

    DEW Exclusive
    $84.95 - $93.95

    (1)

    Experience unparalleled precision and convenience with our portable drafting board, equipped with a transparent edge T-square. Perfect for students, architects, engineers, and artists who demand...
    Qty in Cart: 0
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    $84.95 - $93.95
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  • Quick Angle Protractor

    Quick Angle Protractor

    Timely Templates
    $2.30
    This REALLY IS faster and easier. You can draw your angled line directly and skip the need to make a little mark at the edge of the protractor. With a long enough baseline, you get the same reference...
    Qty in Cart: 0
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    $2.30
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  • 6" Architectural/Engineering Scales Set 6" Architectural/Engineering Scales Set

    6" Architectural/Engineering Scales Set

    Alvin Drafting
    $10.70

    (1)

    Our high-quality scales, crafted from durable high-impact plastic, feature non-reflective matte faces, tapered edges, and printed graduations with color-coded furrows. This set of two includes scales...
    Qty in Cart: 0
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    $10.70
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  • 12" Architectural Aluminum Color-Coded Triangular Scale 12" Architectural Aluminum Color-Coded Triangular Scale

    12" Architectural Aluminum Color-Coded Triangular Scale

    Alumicolor
    $13.80

    (4)

    Alumicolor 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...
    Qty in Cart: 0
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    $13.80
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  • 12" Architectural Solid Aluminum Scale 12" Architectural Solid Aluminum Scale

    12" Architectural Solid Aluminum Scale

    Alumicolor
    $13.00

    (1)

    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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  • 12" Professional Architect Scale

    12" Professional Architect Scale

    Alvin Drafting
    $11.70
    Get accurate, easy-to-read measurements with this professional-grade multipurpose scale, designed for architects, engineers, and mechanical drafting. Whether you're a student learning the...
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    $11.70
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  • 12" Professional Engineer Scale

    12" Professional Engineer Scale

    Alvin Drafting
    $11.70
    Built specifically for engineers and mechanical drafting professionals, this triangular scale delivers crisp readability, reliable accuracy, and long-lasting performance. With machine-engraved...
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    $11.70
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  • 30cm Color Coded Professional Metric Scale 05 30cm Color Coded Professional Metric Scale 05

    30cm Color Coded Professional Metric Scale 05

    Pacific Arc
    $10.85
    The 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...
    Qty in Cart: 0
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    $10.85
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  • 30cm Metric Architect Scale 30cm Metric Architect Scale

    30cm Metric Architect Scale

    Pacific Arc
    $6.20
    Scholastic 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...
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    $6.20
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  • 30cm Metric Drafting Scale 30cm Metric Drafting Scale

    30cm Metric Drafting Scale

    Alvin Drafting
    $10.60
    Alvin 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...
    Qty in Cart: 0
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    $10.60
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  • 30cm Metric Engineering Scale 02 30cm Metric Engineering Scale 02

    30cm Metric Engineering Scale 02

    Pacific Arc
    $10.85
    The 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...
    Qty in Cart: 0
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    $10.85
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  • 6" Color-Coded Architectural Scale 6" Color-Coded Architectural Scale

    6" Color-Coded Architectural Scale

    Alvin Drafting
    $7.10
    Crafted 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...
    Qty in Cart: 0
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    $7.10
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  • 6" Drafting Fan 6" Drafting Fan

    6" Drafting Fan

    Alumicolor
    $14.40

    (2)

    The 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...
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    $14.40
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Types of Drafting Measuring Tools

Drafting measuring tools are precision instruments designed to support technical drawing, scaled layouts, geometry work, engineering calculations, and architectural drafting. This category includes architect scales, engineer scales, drafting rulers, T-squares, triangles, straightedges, proportional scales, measuring tools, and layout instruments used by architects, engineers, designers, students, and drafting professionals.

  • Architect Scales: Measure and create scaled architectural drawings using standard architectural scale ratios
  • Engineer Scales: Support civil engineering, surveying, and technical layouts using decimal-based scale systems
  • Drafting Rulers: Create accurate measurements, straight lines, and layout control for technical drawing applications
  • T-Squares & Straightedges: Produce long, accurate horizontal lines and support parallel drafting workflows
  • Proportional Scales: Help enlarge, reduce, and transfer measurements between drawings and layouts
  • Measuring & Layout Tools: Support geometry construction, technical layouts, scaling, and precision measurement applications

Precision Measurement in Technical Drawing

Accurate measurement is one of the foundations of technical drawing and manual drafting. Drafting rulers, scales, and layout tools help architects, engineers, designers, and drafters maintain consistent dimensions, readable layouts, and precise drawing relationships throughout technical drawings and construction documents.

Before digital drafting became common, scales, triangles, T-squares, and straightedges were essential tools used to create engineering plans, architectural layouts, shop drawings, maps, and technical illustrations. Even today, precision measuring tools remain important for sketching, layout development, classroom drafting, field markups, and scaled drawing applications.

Understanding Drafting Scales

Architect scales and engineer scales are designed differently because they support different types of measurement systems. Architectural scales use fractional scale ratios commonly found in building design and floor plans, while engineer scales use decimal graduations commonly used in civil engineering and surveying applications.

Choosing the correct drafting scale improves measurement accuracy and helps maintain readable technical layouts. Many drafting professionals keep multiple scale types available depending on the drawing discipline and project requirements.

Choosing the Right Drafting Measuring Tools

When selecting drafting measuring tools, consider the type of drafting work being performed, the required measurement system, material durability, and the level of layout precision needed. Professional drafting rulers and scales are designed to provide accurate graduations, dependable edge quality, and long-term readability during repeated technical use.

T-squares and straightedges are especially important for maintaining accurate line alignment and geometry during manual drafting workflows. Combining multiple measuring tools helps create efficient and highly controlled drafting environments for architecture, engineering, design, and educational applications.

Complete Your Drafting Workspace

Pair drafting rulers, scales, and measuring tools with drafting pencils, templates, technical pens, and drafting paper for accurate technical layouts and professional drawing applications.

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