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
Alvin Drafting$4.40 - $5.50Scratch-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.Available in 12" or 18" lengths -
Clear Graduated Acrylic T-Squares with Detachable Head
Pacific Arc$12.60 - $22.10Constructed from heavy clear acrylic and featuring a graduated (inch/metric) blade, the unique detachable head design allows easy transport. The blade can be used separately as a straight edge and ruler.Features:Available in multiple lengthsDetachable... -
College Combination Set
Staedtler$7.40Some of Staedtlers's most popular tools all in one set! These tinted plastic tools all have inking edges. 4-Piece Set Includes: 12" ruler 6" 45°/90° triangle 8" 30°/60° triangle 6" 180° protractor -
Engineer Drawing Tool Set
Alumicolor$30.40Alumicolor's Engineers Drawing Sets combine key products in one easy-to-purchase, cost-effective package. All products are made from solid aluminum and calibrations are photo anodized. The anodizing process makes all markings a permanent part of the... -
Flexible Stainless Steel Rulers
Art Alternatives$5.70 - $15.00This classic ruler is a staple for any studio, classroom, garage or DIY household. With its flexible metal construction and cork backing, it is both durable and safe to use without scratching various surfaces or slipping under pressure.Features:Features... -
Ludwig Scholastic Aluminum T-Squares
Alumicolor$8.20 - $22.50The Alumicolor economy Scholastic T-Squares are made from extruded aluminum and are perfect for students or those looking for a good-quality, light-weight t-square at a economical price.Features: Available in multiple lengths: 12", 18", 24", 30",... -
Machine Square
Excel$13.90 - $31.50These squares are perfect for 90° layout and machine set-up. These squares are made from hardened, tempered and polished carbon steel.A machinist square, also known as an engineer's square, is a measuring tool used in the field of metalworking and... -
Mini Protractor
Timely Templates$1.20This pocket-size protractor has 1° graduation clearly printed on .020 matte surface green vinyl. This material is tough and flexible. -
Non-Skid Flexible Stainless Steel Ruler
Alvin Drafting$2.30 - $13.70The Alvin Drafting flexible rulers are made of finest quality stainless steel with non-skid cork backing that won’t slip on glass or polished surfaces. Features: Graduated in 16ths, 32nds, and metricStainless steelEtched graduationsNon-skid cork... -
Pica Pole Steel Ruler
Pacific Arc$9.40 - $22.75The Pacific Arc Pica Pole is a printer's and graphic artist's best friend that is a perfect versatile ruler for every profession or hobby.Features: Hooked headContains inches, agate, picas and pointsHigh Quality Material for long-lasting durability... -
Plastic Math Set
Staedtler$2.60Stay prepared for math class with this essential 4-piece set, which includes a 6-inch ruler, a 4-inch protractor, a 45-degree triangle, and a 30/60-degree triangle. The transparent design of the pieces allows items to show through for enhanced precision... -
Plastic T-Squares
Helix$5.10 - $10.20A 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, blue-tinted, flexible plasticSturdy... -
Plastic Vernier Caliper
Pacific Arc$4.40The 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 object. This tool saves time and money for everyday... -
Professional Graduated Aluminum T-Squares
Alumicolor$24.50 - $44.05Alumicolor® has a full line of Professional T-Squares with a 2" wide extruded aluminum blade. Calibrations are made using the Alumicolor® photo anodizing process giving all our products a smooth, tick-free finish that will not wear. The black ABS... -
Professional Multi-Purpose Rolling Ruler
Pacific Arc$27.50 - $32.10The Pacific Arc Professional Parallel Glider is an easy-to-use drawing tool that combines the function of a parallel straightedge, protractor, T-Square, and compass. Features: Available in two sizes:10" & 14"Draw parallel lines with ease and... -
Professional Non-Slip Straightedge
Alumicolor$22.60 - $33.45Alumicolor’s Non-Slip Professional Straight Edges are made with extra wide 2" tempered aluminum with a neoprene non-slip backing. Stays in place easily with slight pressure and permanent calibrations resist being cleaned or rubbed off.** Custom... -
Professional Steel-Edge T-Squares
Alumicolor$31.55 - $54.30The Alumicolor Steel Edge Professional T-Squares have dual stainless steel cutting and inking edges embedded in a tempered aluminum shaft and is made for heavy-duty use. Features: Available in three lengths: 24", 36" & 42"Dual stainless steel... -
Proportional Scale
Westcott$8.85 - $11.65This scale is ideal for calculating enlargements or reductions of photographs, artwork and layouts. Simply line up the size of your original with the intended size for reproduction. It provides number of times of reduction as well as percentage of... -
Protractor
Timely Templates$1.80Made of green, transparent vinyl, this precision protractor is tough and flexible. It will not break. -
Quarter Protractor
Timely Templates$3.10It's all you really need. Features: 3", 4", 6", 8" and 10" protractors are combined into one compact pieceFine line graduations are printed on .020 matte surface green transparent vinylThe 8 and 10 inch protractors have 1/2 degree graduationsThe...
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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