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" 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" Color-Coded Engineer 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" Color-Coded Engineering Scale
Alvin Drafting$7.70High-quality scales made from high-impact plastic with white, nonreflecting, matte faces and tapered edges. Printed graduations and colorcoded furrows.Engineer Graduations 10, 20, 30, 40, 50, 60 parts to the inch. Features: 6" Engineer Pocket Drafting... -
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... -
6" Engineer 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.Engineer Graduations Fully divided: 10, 20, 30, 40, 50, & 60... -
6" Flat Pocket Engineering Scale
Alvin Drafting$6.70The Alvin Drafting 6" Plastic Engineer 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 a... -
6" Four-Bevel Aluminum Architectural Scale
Alumicolor$7.20Alumicolor Architect6" 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 rubbing... -
6" Four-Bevel Architect Joist/Truss Scale
Alumicolor$7.20Alumicolor Joist/Truss Scales are accurate, quality 4 bevel scales, which will be a BIG hit with architects, builders, roofers, framers and lumber yards. The (3/16", 3/32") scales are used frequently for measuring reduced plans. Architect... -
6" Four-Bevel Architectural Scale
Pacific Arc$7.00The 6" beveled architect's scale is a durable precision tool with etched graduations on each edge for accurate measurements. Constructed from high-impact plastic, it ensures longevity and reliability, with markings that won't fade or rub off. A favorite... -
6" Pocket Aluminum Combination Scale
Alumicolor$5.45Alumicolor 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.Combination Graduations Architect Scales - 16 & (1/8,... -
6" Pocket Aluminum Engineers Scale
Alumicolor$5.45Alumicolor 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.Engineer Graduations 10, 20, 30, 40, 50, 60 parts per... -
6" Pocket Rule
Alvin Drafting$4.306" Stainless Steel English Pocket RuleFeatures: Stainless Steel Etched Graduations Graduated in 16ths, 32nds, and 64ths Pocket clip doubles as depth gauge Fraction/decimal equivilent chart on back of scale -
6" Protractor Ruler
Westcott$2.10This transparent 180 protractor ruler has scales in both 1/16" and centimeter calibrations. The SW-51 also has 45 and 60 triangle cut-outs plus a French curve symbol. Features: Transparent 180* protractor ruler45* and 60* triangle cut outs plus French... -
6" Protractor Ruler - 10 & 20 Parts to Inch
Westcott$3.60Combination protractor/scale/ruler for fast preliminary layouts. Graduations designed for civil engineers, surveyors, and general use.Features: 10 & 20 Parts to Inch180 degree protractor with tenths and 20ths to the inch scalesTransparent... -
6" Protractor Ruler-1764364609
Westcott$2.40Westcott 6"/15cm Protractor Ruler 180° protractor ruler has 8ths graph, 16ths to the inch and centimeter scales. It is laminated for durability and features a translucent color to allow for viewing through to the page. Westcott Drafting & Drawing Tools... -
6" Rolling Parallel Ruler
Alvin Drafting$8.40A multi-purpose drawing tool made from high impact plastic for students, artists, and designers. Features: Graduated in both English and metric. Includes many useful formulas and conversion factors. Draw horizontal and vertical parallel... -
6" Swing Arm Protractor
Helix$2.90This 6" protractor features a swing arm for precise measuring of angles. A go-to tool for students, draftsmen and engineers.Features: Integrated arm helps draw accurate anglesBeveled edge for better accuracyTransparent plastic for easy measuringSturdy,... -
6" x 12" Frosted Acrylic Ruler
Olfa$20.15The OLFA Frosted Advantage Acrylic Ruler delivers precision cutting and measuring for quilting, crafting, and detailed fabric work. This professional-grade ruler combines traditional straight-edge functionality with innovative pivot-point technology,... -
8" Semicircular Protractor
Alvin Drafting$3.80The 180° semi-circular protractor features a center cutout and finely beveled edges, allowing for effortless lifting and maneuvering, making writing and drawing straightforward and convenient. Constructed from durable 0.08-inch thick polystyrene, this...
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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