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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Aluminum Triangles
Fairgate$22.40 - $45.60Lightweight, durable aluminum with matte-satin finish that resists stains and tarnishing. Features 1/16" graduations on the 90 angle. May also be used as a template for circles from 1/16" to 1 3/8".Made in the USA -
Angle and Circle Maker
Helix$5.60This circular protractor rotates freely, enabling you to draw angles like a protractor and circles like a compass. The center disc includes slots for drawing angles up to 360° and holes for creating circles ranging from 1/8" to 4" in diameter... -
Basic Bow Combination Compass Set
Alvin & Co.$38.40Features: 6" compass with interchangeable pen, pencil and divider parts4-1/2" compass with interchangeable pen, pencil and divider parts6" beam bar extension and slide coupling6" friction divider with self centering gear head design and replaceable... -
Basic-Bow Standard Drawing Set
Alvin Drafting$43.80Set includes 6" and 4½" pencil compass/dividers and 6" friction divider with self centering gear head design and replaceable needle points.Features: 6" compass is designed with fiberglass ringhead and pivot design for smooth, firm adjustment.Accurate... -
Beam Compass Bar Slide Assembly
Pacific Arc$5.70The Bar Slide Assembly for Beam Compasses allows smooth and accurate adjustment of beam compasses. It contains a complete bar slide assembly that replaces the sliding leg part of any Alvin beam compass. It also comes with spring-loaded thumbwheels.For... -
Beam Compass Coupling
Pacific Arc$4.00Beam Compass Coupling with thumb screw. Works with both Pacific Arc & Alvin beam compasses. -
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Beam Compass Point Leg
Pacific Arc$2.40Point leg for beam compasses.Works with both Pacific Arc & Alvin beam compasses. -
Beam Compass Ruling Pen Leg
Pacific Arc$2.30Ruling pen leg for beam compasses. Works with both Pacific Arc & Alvin beam compasses. -
Bulk-Pak 2mm (2H) Compass Leads - 144/pk
Alvin & Co.$10.40A convenient way to refill standard drawing instruments with pre-sharpened chisel points. 2mm in diameter and ¾" long. -
C-THRU 8-Piece French Curve Set - Inkling Edge
Westcott$17.00This French curve set includes eight of the most popular curves. These heavy-weight curves feature a smooth inking edge and allow you to create a wide variety of continuous, flowing arcs and curves.Features: Heavy weight clear plasticSmooth... -
Circle Ruler
Helix$4.70This dual-purpose ruler also works as a compass, allowing the you to make circles from 1/16" to 12" in diameter. A useful tool for draftsmen, students, artists and crafters who require precise, measured lines. Great for mathematic calculations, technical... -
Clear Acrylic Professional Triangles - Straight Edge
Pacific Arc$2.90 - $45.95The Pacific Arc Clear Professional triangles will not discolor or warp with age and handling. Features: 30º/60º and 45º/90º professional clear trianglesAcrylic that will not feather with ageAvailable in multiple sizes ranging from 4" to... -
Clear Acrylic Triangles - Straight Edge
Alvin Drafting$5.70 - $58.80The Alvin Clear Professional triangles will not discolor or warp with age and handling. Features: 30º/60º and 45º/90º professional clear trianglesAvailable in multiple sizes ranging from 4" to 24"Straight-Edge Triangles1/8" thickWill not discolor... -
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 -
Compact Drawing Set
Alvin Drafting$22.50This 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. Precisely designed, manufactured with durable materials, and Made in Germany,... -
Compass and Divider Beginner Set
Alvin & Co.$13.90The Alvin Compass and Divider Beginner Set is a perfect package for students, crafters, and hobbyists. It contains basic drawing instruments that are commonly used in most drawing and drafting applications.Features: Includes 5 ¾-inch compass with center... -
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Computing Adjustable Triangle - Inking Edge
Alvin Drafting$20.40 - $33.75The Alvin Drafting Computing Adjustable Triangles are ideal for calculating length and distance in classrooms and professional applications, this tool features an optically clear acrylic body for easier and more accurate measuring. The thumbscrew lock... -
Fluorescent Triangles - Straight-Edge
Pacific Arc$3.40 - $52.25The Pacific Arc Professional Fluorescent triangle is extremely popular because the refracted light has an illuminating effect on the drawing by accentuating the triangles edge.Features: 30º/60º and 45º/90º professional fluorescent...
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
