Drafting instruments are the foundation of accurate technical drawing. From triangles and compasses to beam compasses, dividers, irregular curves, proportional dividers, and pantographs, these tools help create precise layouts for architecture, engineering, surveying, and design work.
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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... -
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... -
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... -
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,... -
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... -
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... -
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,... -
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... -
6" Introductory Bow Compass/Divider
Alvin Drafting$11.95This 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... -
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... -
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"... -
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... -
6" Quick-Action Compass & Divider Set
Pacific Arc$19.20The Pacific Arc 6" Quick Action Compass & Divider Set is designed for drafting, technical drawing, geometry, and classroom use. Featuring a quick-action compass and divider, this set allows users to... -
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... -
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... -
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... -
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... -
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... -
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...
Drafting Instruments for Technical Drawing and Precision Layout
Architecture and engineering students still learn geometry, spacing, and layout fundamentals on these tools during manual drafting coursework. Many professionals keep a few on hand for concept sketching and quick layout work long after most of their day moves into CAD software.
Choosing Instruments That Hold Up
A cheap compass is one of the most common frustrations students run into. Low-cost compasses slip, wobble, or drift out of adjustment mid-drawing, which turns a simple circle into a repeated headache over a semester of geometry or drafting coursework. Spending a bit more on a compass that holds its setting pays off fast once you are using it several times a week.
Triangles and parallel bars see just as much use. A well-made triangle stays true, with clean edges that won't chip or wear quickly, while a quality parallel bar can last for decades with proper care. It's not unusual for us to hear from architects and engineers who still have the same parallel bar they learned on years ago and are looking for parts to keep their bar in working order.
Still Used Alongside CAD
Hand drafting has not gone away. Instructors use these tools to teach geometry, spacing, and proportion before students ever open a CAD program, and many working designers still sketch ideas by hand before modeling them digitally. Compasses, triangles, and parallel bars stay part of that process even after the drawing moves onto a screen.
Complete Your Drafting Workspace
Pair drafting instruments with related drafting tools and drawing supplies to create a complete technical drawing and design workspace.
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