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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6" Compass Extension Bar
Pacific Arc$4.90Enhance your drafting compass experience by adding an extension bar to create bigger circles.For use with Pacific Arc compasses -
6" Friction Divider with Double Break Leg
Pacific Arc$8.00Easily measures, transfer measurements, or mark off specific distances. Accurately transfer measurements on most project surfaces.Features: Telescoping leg extends to max 11.5" radiusJoint leg can attach to universal adaptor (sold separately)Replaceable... -
6" Introductory Bow Compass/Divider
Alvin Drafting$12.00This compass is exactly what an artists, student, crafter, or hobbyist needs. It can be used as a basic drafting or drawing instrument for both projects and artwork. Made in Germany from matte silver zinc and durable fiberglass, and comes with... -
6" Master Bow Traditional Compass
Alvin Drafting$15.80Alvin Drafting compasses are made with German precision engineering that allows for the precise and consistent drawing of radii. Made from quality materials such as zinc alloy, ALVIN drafting compasses are sure to last the test of time... -
6" Press Button Quick Action Compass
Pacific Arc$14.60Professional quality Speed Bow Compass adjusts two ways: press the buttons on the legs for extremely fast adjustment or use the center wheel for fine adjustment.QSB-810C features our signature 6" QSB-series compass with universal adaptor and spare parts... -
6" Professional Speed-Bow Compass Beam Bar Set
Alvin Drafting$21.20This compass is made from zinc alloy with a matte chrome finish. Sturdy push button mechanism allows for quick adjustments, while the red spindle can be used for more finite adjustments. Features: Double break leg designCreate circles up to 12" in... -
6" Quick Action Compass with Extension Bar
Pacific Arc$16.60Professional quality Speed Bow Compass adjusts two ways: press the buttons on the legs for extremely fast adjustment or use the center wheel for fine adjustment.QSB-810CEX features our signature 6" QSB-series compass with beam, universal adaptor and... -
6" Quick-Action Compass & Divider Set
Pacific Arc$19.20Professional quality Speed Bow Compass adjusts two ways: press the buttons on the legs for extremely fast adjustment or use the center wheel for fine adjustment.QSB-810CEX features our signature 6" QSB-series compass with beam, universal adaptor and... -
6" Ruler & Geometry Set
Art Alternatives$5.10Perfect for students and professionals alike, this geometry set contains a 180° protractor, 45° and 60° triangles and a 6" ruler. The rulers and triangles all have inch and centimeter calibrations for all your measuring needs, and have a clear... -
6" Stainless Steel Equal Spacing Divider
Pacific Arc$45.50Equal Spacing Dividers are constructed from highest quality stainless steel for years of trouble-free service. Used in form design, model development, textile design, etc., the 11 points create ten equal spaces.Features: Plots 11 equally spaced points... -
6" Traditional Friction Divider
Pacific Arc$6.10Easily measures, transfer measurements, or mark off specific distances. Accurately transfer measurements on most project surfaces.Features: Replaceable and adjustable needle pointsExtends to a maximum 9.25" radius -
6-Piece Ship Curve Set
Westcott$23.50This set of drawing templates features six curve guides that suggest the gently bowing and tapered curves of a ship's hull. Whether you are drafting, designing or creating a technical drawing, this curve set is extremely useful.Features: Fabricated from... -
6.5" Smoke-Grey French Curve - Inking Edge
Alvin Drafting$2.90The 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... -
6.5" Spring-Bow Compass
Pacific Arc$9.80Traditional Spring Bow compass features a true steel hoop for longevity and reliability that represents the very best value on the market.Features:6.5" Bow CompassCenter wheel for fine adjustments.True steel hoopFixed legs for simple, accurate... -
8" 45/90 Acrylic Cutting-Edge Triangle
Art Alternatives$13.30These clear acrylic triangles features grid markings including centering lines to facilitate scaled drawings, geometric compositions, and detailed linework. These are multi-use tools, handy for measuring, drawing and cutting. Two edges are beveled for... -
8-Piece French Curve Set
Alvin Drafting$29.00The most popular full-seized curves molded of smoke gray-tinted 0.10" thick polystyrene with double inking edges. These french curves are great for individual or classroom use!This set contains: FC3361 - 5.25"FC3371 - 6.5"FC3381 - 6.5"FC3391 -... -
8-Piece Geometry Set with Compass
Alvin Drafting$5.80This 8-piece geometry set is ideal For Students Of All Ages, Vocational Or College Classes Studying Drafting, Architectural Design, And Construction Engineering. These sets are versatile and can Be Used In Geometry Class, Drafting, Architectural... -
8.5" Smoke-Grey French Curve - Inking Edge
Alvin Drafting$4.10The 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... -
Alumicolor Beam Compass Rule
Alumicolor$14.05 - $15.35The Alumicolor Compass Ruler Set includes a shaft, anchor point, lead holder, and lead, all in one package. This versatile tool can create large circles and automatically calculates the radius, area, and circumference. The fingertip control trammel... -
Aluminum Calibrated Triangles
Alumicolor$5.95 - $13.45BulletsFeatures: Available in 45/90 or 30/60-anglesSizes 6" to 12" with calibrations in inches and centimetersNow featuring calibrations on the holesTempered aluminumDescriptionAlumicolor® Calibrated Aluminum Triangles are made of tempered aluminum...
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
