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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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... -
12" Vary form Curve
Fairgate$10.7012" Aluminum English Vary Form Curve.Draws a wide range of curves by simply turning.Practically replaces a set of French curves. Indispensible to the pattern maker and grapic artist.Calibrated one edge two sides.8ths -
12.5" 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... -
2-Piece Aluminum Triangle Set
Alumicolor$12.00 - $14.70Alumicolor Calibrated Triangles are made of tempered aluminum. Photo anodized calibrations are a part of the finish and resist cleaning or rubbing off. Ultra smooth finish won't mark your work surface. Available in 45/90 or 30/60-angles with calibrations... -
24" Hip Curve
Alvin Drafting$19.65This Hip Curve ruler boasts sharp, wear-resistant graduations for easy readability in both English and metric measurements. Designed for architects, engineers, and mechanical draftsmen, it's suitable for students, hobbyists, and professionals. Crafted... -
24" Irregular French Curve
Alvin Drafting$23.60Introducing the Alvin Drafting 24" Aluminum French Curve Ruler, a versatile tool perfect for drawing, planning, and designing tasks in various fields including drafting and architecture. Its user-friendly design features sharp graduations that are... -
3" Triangle Stainless Steel Ruler
Alvin Drafting$6.10Made of durable stainless steel with etched inch graduations, this drafting triangle ruler is ideal for hobby and craft projects, drawing, drafting, and more. Its high strength and hardness make it perfect for woodworking, ensuring long-lasting use. The... -
3-Piece French Curve Set
Alvin Drafting$9.20Features: 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 -
3-Piece French Curve Set-1764364414
Pacific Arc$3.60Collegiate French Curve Set represents the best value in student French curve sets. Curves have smooth edges with inking lifts and are packed in a reusable sleeve.Small French Curve dimension: 5.3" x 2.9" x .12"Medium French Curve dimension: 6.6" x 3.1"... -
4-3/4" Academic Bow Pencil Compass
Alvin & Co.$12.50Hoop spring tension pencil compass creates circles up to 4" in diameter.Features: Fast center wheel adjustment Built-in spindle stop to prevent over extension Matte nickel finish that resists stains and tarnishing Create circles up to 4" in... -
4.5" Small Bow Compass
Pacific Arc$5.95The Pacific Arc 4.5” Small Spring Bow Compass is a professional-quality drafting tool designed for precision and durability. Built with a true steel hoop structure, this compass delivers long-lasting performance for students, architects, engineers, and... -
5" Bow Compass/Divider
Alvin Drafting$8.40Create precise circles up to 8 inches in diameter with this durable metal drawing tool, perfect for geometry, drafting, and engineering. Its compact 5-inch design is portable and easy to use, featuring a center wheel mechanism for smooth, accurate... -
5.25" Smoke-Grey French Curve - Inking Edge
Alvin Drafting$2.50The 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... -
5.5" Scholastic Divider
Alvin Drafting$9.20This divider is exactly what an artists, student, crafter, or hobbyist needs. It can be used as a basic drafting instrument for both projects and artwork.Features: 5.5" friction dividerFixed needle pointsMatte nickel finish resists stains and... -
5.5" School Pencil Compass
Alvin & Co.$1.95Compass is constructed of durable, lightweight plastic with fiberglass reinforcement to resist bending. Quick release pencil holder holds all standard pencil sizes. Hand adjustable 6" measuring arc has easy-to-read ½" graduations. Blunt safety point... -
6 Piece Ship Curve Set
Alvin Drafting$29.70This fabricated ship curve set is a must-have for any draftsman, engineer, architect and professional for drawing irregular curves. The set includes six different ship curves. The plastic thickness is 0.08 inch. Alvin has been a trusted name in drafting... -
6" Academic Divider
Alvin Drafting$12.40The Alvin Drafting 6" inch academic friction divider with self centering gearhead design with replaceable needle points is perfectly useful for all levels, whether for geometry class, drafting, architectural design, construction, or engineering... -
6" Basic-Bow Compass and Beam Bar
Alvin Drafting$27.20Designed with a fiberglass ringhead and pivot design for smooth, firm adjustment. Features: Accurate center wheel adjusts quickly Makes circles up to 10" in diameterBeam bar extension creates circles up to 20" in diameterBuilt-in spindle... -
6" Basic-Bow Pencil Compass/Divider
Alvin Drafting$15.10Designed with a fiberglass ring head and pivot design for smooth, firm adjustment. Features: Accurate center wheel adjusts quickly and easily Creates circles up to 10" diameter. Built-in spindle stop prevents over-extension. Supplied with...
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
