Shop professional drafting instruments including drafting triangles, compasses, dividers, beam compasses, proportional dividers, pantographs, irregular curves, and precision geometry tools for technical drawing, engineering, architecture, design, and STEM education applications.
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Smoke Triangles - Inking Edge
Alvin Drafting$2.30 - $7.70The Alvin inking edge triangles are made of molded 0.10" thick polystyrene and feature a transparent non-glare smoke tint for easy visibility.Features: 30º/60º and 45º/90º trianglesAvailable in multiple sizes ranging from 4" to 14"Inking-Edge... -
2mm HB Compass Lead - 12/tube
Alvin & Co.$2.20Each tube holds 12 leads 2mm in diameter and ¾" long. Packaged 12 leads/tube. -
2mm 2H Compass Lead - 12/tube
Alvin & Co.$2.20Each tube holds 12 leads 2mm in diameter and long. Packaged 12 leads/tube." -
Comfort Compass & Beam Set
Staedtler$35.40Precision compass with spindle guide, spring-bow head and centre wheel.Features:Solid metal compassHinged leg joint and needle shoeInterchangeable lead part with shank 4 mmInterchangeable shouldered needleMax. circle approx. 265 mm, with extension bar... -
Drafting Triangle Set
Westcott$6.45Westcott Drafting Triangle Set delivers precision and quality for technical drawing, architectural drafting, and geometric design work. This professional-grade triangle set combines durability with innovative design features, making it an essential tool... -
3-Piece French Curves Set
Alvin & Co.$2.85Features: French curves molded of green-tinted 0.09" thick styrene plasticGreat for individual or classroom useContains French Curve sizes: 5.5", 6.5", and 12.5"Packaged in a convenient, reusable storage pouch -
4-Piece French Curve Set
Alvin Drafting$15.80Alvin Drafting French Curves are an ideal tool for drawing irregular curves and connecting lines and line segments. Use these French curves in manual drafting to draw smooth curves of varying radii.Features: Molded of smoke gray-tinted 0... -
6" Transparent French Curve
Alvin & Co.$2.20Professional quality hand-finished curves of 0.06" thick acrylic. Sizes given are nominal. -
Academic Transparent Triangles
Alvin Drafting$2.00 - $5.40These Academic Drafting Triangles have a double-taper cutout center for easy lifting, enhancing efficiency. Made from durable, extra-heavy acrylic, they resist discoloration and warping. Ideal for students, hobbyists, and professionals, these tools... -
Paral-Liner Parallel Straightedges
Alvin Drafting$171.00 - $231.00The Alvin Drafting Paral-Liner Parallel Straightedge Bar enables precise and swift sketching with retractable rollers that lock the blade in place for precise drawing. It comes with all necessary mounting hardware and clear instructions for easy... -
Pro-Draft Parallel Bar
Martin Universal$184.70 - $219.80The Martin® Pro-Draft Professional Parallel Straightedge comprises cutting-edge technology making the premier straightedge in its class. It features an aluminum body for strength and stability, anti-warp cast acrylic bottom making it suitable for both... -
Professional 6" Pen/Pencil Compass with Beam Bar
Pickett$34.10The Pickett Professional 6 Inch Pen and Pencil Compass is made of durable steel construction for long-lasting use. This 6 inch compass makes a maximum 10" circle and is delicately balanced, providing feather-light control. Made of chrome-plated brass and... -
10" Fluorescent Triangles - Inking Edge
Alvin & Co.$2.80 - $3.80BulletsFeatures: 30º/60º and 45º/90º trianglesAvailable in multiple sizes ranging from 4" to 14"Inking-Edge Triangles0.10" thickFluorescent orange color reflects light along the drawing edgeEdges are double beveled with handy finger-lifts for quick... -
10" Smoke-Grey French Curve - Inking Edge
Alvin Drafting$4.40The Alvin French Curve is perfect for drawing irregular curves and connecting line segments. Its dual inking edges ensure smudge-free, precise results with pencils or technical pens on either side. Made from 0.10" thick transparent... -
10" Smoke-Grey French Curve - Inking Edge-1764695327
Alvin Drafting$4.40The Alvin French Curve is perfect for drawing irregular curves and connecting line segments. Its dual inking edges ensure smudge-free, precise results with pencils or technical pens on either side. Made from 0.10" thick transparent... -
10-Piece Geometry Study Set
Maped$7.95A compact, comprehensive geometry set that is packed in a reusable plastic storage box.Set Includes: Metal compass with pencil holder Metal compass with lead Pencil sharpener Eraser Pencil Ruler Protractor Set of squares One pack of... -
10-Piece Math Set
Staedtler$3.40The Staedtler Math Set is an ideal tool bundle for math class and drafting! Math Set Contains: 6"/15cm ruler (Imperial and metric)4" 45 degree set square4" 30/60 degree set square4" 180 degree protractorlettering guide4" compass4" dividerWooden... -
10-Piece Mathematical Instrument Set
Alvin & Co.$6.00This Mathematical Instrument Set includes:Metal pencil compassAlphabet stencil45° triangle30°/60° triangleVinyl eraser Metal divider Pencil6"/15cm ruler180° protractorSharpenerPackaged in attractive metal case with printed conversion charts inside lid. -
12" Graduated Flexible Curve
Pacific Arc$9.20 - $22.90BulletsFeatures: Graduated sizes: 12", 16", 18", 24".Inches and metric available for any measuring needs.Completely straighten or bend into whatever shape needed.DescriptionFlexible Curves allow for the creation of an infinite number of curves to meet... -
12" Ruler & Geometry Set
Art Alternatives$9.40Perfect for students and professionals alike, this geometry set contains a 180° protractor, 45° and 60° triangles and a 12" ruler. The rulers and triangles all have inch and centimeter calibrations for all your measuring needs, and have a clear...
Types of Drafting Instruments
Drafting instruments are precision drawing tools used to create accurate lines, angles, curves, circles, proportional layouts, and technical drawings. These instruments remain essential for engineering, architecture, industrial design, STEM education, geometry instruction, fabrication layouts, and manual drafting workflows where precision and repeatability are critical.
- Drafting Triangles: Create accurate verticals, angles, and parallel lines for technical drawing and layout work
- Adjustable Triangles: Support variable-angle drafting, engineering layouts, and precision drawing applications
- Drawing Compasses: Draw precise circles and arcs for drafting, geometry, engineering, and design work
- Beam Compasses: Create large-radius circles and oversized arcs used in architectural and engineering layouts
- Dividers: Transfer measurements, divide spaces, and step off equal distances in technical drawings and layouts
- Equal Spacing & Proportional Dividers: Scale drawings, enlarge artwork, reduce layouts, and maintain proportional measurements
- Pantographs: Enlarge, reduce, and duplicate drawings while maintaining accurate proportions and geometry
- Irregular Curves: Create smooth non-circular curves, contours, and transitions for drafting and design applications
- Math & Geometry Instrument Sets: Combine compasses, rulers, dividers, protractors, and geometry tools for classroom and technical use
- Compass Parts & Accessories: Maintain drafting instruments with replacement leads, points, adapters, and extension bars
Why Drafting Instruments Still Matter
Even in modern CAD and digital design environments, drafting instruments remain valuable for concept sketching, classroom instruction, field work, geometry education, fabrication planning, overlays, and manual drafting workflows. Many architects, engineers, designers, and students still rely on traditional drafting instruments for learning core drafting principles and developing precise technical drawing skills.
Professional drafting instruments are designed for repeatable accuracy, smooth operation, and long-term reliability. High-quality compasses, triangles, dividers, and proportional tools help improve drawing precision while reducing layout errors in technical and engineering applications.
Choosing the Right Drafting Instruments
When selecting drafting instruments, consider the type of drawing work being performed, the scale of the project, and the level of precision required. Geometry and classroom sets work well for education and general drafting, while professional compasses, beam compasses, proportional dividers, and pantographs support more advanced engineering, fabrication, and design applications.
Frequently Asked Questions
What are drafting instruments?
Drafting instruments are precision drawing tools used to create accurate lines, circles, angles, curves, and scaled technical drawings for engineering, architecture, design, and geometry applications.
Are drafting instruments still used today?
Yes. Drafting instruments are still widely used for STEM education, concept sketching, geometry instruction, fabrication layouts, overlays, and manual drafting workflows.
What drafting instruments do architects and engineers use?
Common drafting instruments include compasses, drafting triangles, dividers, proportional dividers, scales, irregular curves, and beam compasses.
Complete Your Drafting Workspace
Pair drafting instruments with related drafting tools and drawing supplies to create a complete technical drawing and design workspace.
Shop Drafting Templates | Shop Drafting Pencils & Leads | Shop Ruling & Measuring Tools | Shop Technical Pens | Shop Drafting Paper | Shop Drafting Boards | Shop Drafting Parallel Bars
