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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6" Drafting Fan
Alumicolor$14.40The 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 sheet, riveted together giving you a compact tool... -
6" Protractor Ruler - 10 & 50 Parts to Inch
Westcott$4.00Thin plastic combination protractor/scale/ruler for fast preliminary layouts. Features:Graduations designed for civil engineers, surveyors, and general use.180 degree protractor6" rulerInch in 10ths/50ths -
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" Engineering 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 process,... -
12" Engineering Aluminum Solid 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... -
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... -
12" Scholastic Color-Coded Engineer Scale
Pacific Arc$5.90Scholastic Engineers Triangular Scale - Color Coded Scholastic triangular scale are color coded for easy use.Engineer GraduationsFully divided: 10, 20, 30, 40, 50, & 60 parts to the inchFeatures: 12" Engineer ScaleHigh quality - Hard PlasticColor-Coded... -
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. ... -
18" Hollow Aluminum Engineer Scale
Alumicolor$16.35Alumicolor Engineer 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. These... -
30cm Metric Engineer Color-Coded Scale
Alumicolor$13.80The 12" color-coded Metric Engineer 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... -
30cm Metric Engineering Scale 02
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,... -
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" Engineer Plastic Mini Scale
Pacific Arc$9.40The Professional Premium Plastic Triangular Engineer 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... -
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" Inch/Metric Pocket Rule
Alvin Drafting$4.306" 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 equivalent chart on back of scale -
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 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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