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Best Selling Protractors and Triangles
Blick Aluminum Triangles
Blick Aluminum Triangles
$6.08 - $16.77
(9 Reviews)
Item #: 56017
Blick Aluminum Triangles are durable and have a stain-resistant finish that won't mar your work surface.
Blick Aluminum Triangles
( 9 Reviews)
Item #: 56017
$6.08 - $16.77
Blick Aluminum Triangles are durable and have a stain-resistant finish that won't mar your work surface.
$6.08 - $16.77
Blick Triangles
Blick Triangles
$1.66 - $9.77
(33 Reviews)
Item #: 55447
Made of clear acrylic plastic, .080" thick, with finger lifts. Styles: 45°/90° and 30°/60°. Sizes up to 18". Also set.
Blick Triangles
( 33 Reviews)
Item #: 55447
$1.66 - $9.77
Made of clear acrylic plastic, .080" thick, with finger lifts. Styles: 45°/90° and 30°/60°. Sizes up to 18". Also set.
$1.66 - $9.77
Helix Angle and Circle Maker
Helix Angle and Circle Maker
$5.59
(19 Reviews)
Item #: 55990
Use this handy 6"Dia two-in-one protractor and compass to draw circles and measure angles.
Helix Angle and Circle Maker
( 19 Reviews)
Item #: 55990
$5.59
Use this handy 6"Dia two-in-one protractor and compass to draw circles and measure angles.
$5.59
Westcott Adjustable Triangles
Westcott Adjustable Triangles
$12.22 - $13.68
(5 Reviews)
Item #: 55790
These transparent adjustable triangles from Westcott permit tracing of angles from 0° to 90°. The inner gradations on the arc show the degrees of one angle, while the outer row of gradations show the degrees of the complementary angle.
Westcott Adjustable Triangles
( 5 Reviews)
Item #: 55790
$12.22 - $13.68
These transparent adjustable triangles from Westcott permit tracing of angles from 0° to 90°. The inner gradations on the arc show the degrees...
$12.22 - $13.68
Westcott Combo Set
Westcott Combo Set
$4.71 - $7.70
(7 Reviews)
Item #: 55467
Contains an inch/metric ruler, an 180 degree protractor, plus 45 degree and 60 degree triangles. Clear plastic, with legible black markings. In plastic pouch. Sizes up to 12".
Westcott Combo Set
( 7 Reviews)
Item #: 55467
$4.71 - $7.70
Contains an inch/metric ruler, an 180 degree protractor, plus 45 degree and 60 degree triangles. Clear plastic, with legible black markings. In plasti...
$4.71 - $7.70
Westcott Professional Triangles
Westcott Professional Triangles
$3.98 - $42.26
(5 Reviews)
Item #: 55703
Westcott's Professional series of triangles are crafted with smoke-tinted transparent acrylic. They are very sturdy and resist scratches and breakage. They feature an inking edge and a double bevel cut-out center for easy pick up.
Westcott Professional Triangles
( 5 Reviews)
Item #: 55703
$3.98 - $42.26
Westcott's Professional series of triangles are crafted with smoke-tinted transparent acrylic. They are very sturdy and resist scratches and breakage....
$3.98 - $42.26
Triangles
Alumicolor Alumidrafter Drafting and Measuring Tool
Alumicolor Alumidrafter Drafting and Measuring Tool
$10.93
(2 Reviews)
Item #: 63984
Use the all-in-one Alumicolor Alumidrafter Drafting and Measuring Tool to measure and scale drawings, draft circles and arcs, and draw angles and triangles. The portable, two-sided tool has 16 calibrations, featuring all the standard measurements an architect could need.
Alumicolor Alumidrafter Drafting and Measuring Tool
( 2 Reviews)
Item #: 63984
$10.93
Use the all-in-one Alumicolor Alumidrafter Drafting and Measuring Tool to measure and scale drawings, draft circles and arcs, and draw angles and tria...
$10.93
Alumicolor Aluminum Triangles
Alumicolor Aluminum Triangles
$7.75 - $18.95
(3 Reviews)
Item #: 55726
Alumicolor Aluminum Triangles are stamped out of aluminum sheet and then photo-anodized with solvent-defying calibrations for years of productive drafting.
Alumicolor Aluminum Triangles
( 3 Reviews)
Item #: 55726
$7.75 - $18.95
Alumicolor Aluminum Triangles are stamped out of aluminum sheet and then photo-anodized with solvent-defying calibrations for years of productive draf...
$7.75 - $18.95
Alvin Adjustable Tru-Angle Triangles
Alvin Adjustable Tru-Angle Triangles
$29.67 - $33.97
(2 Reviews)
Item #: 55423
The Alvin Adjustable Tru-Angle Triangle provides the features of a 45°/90° adjustable triangle, plus those of a protractor. Featuring die-engraved graduations for high visibility, angles from 0° to 90° can be drawn from the baseline with ½° accuracy.
Alvin Adjustable Tru-Angle Triangles
( 2 Reviews)
Item #: 55423
$29.67 - $33.97
The Alvin Adjustable Tru-Angle Triangle provides the features of a 45°/90° adjustable triangle, plus those of a protractor. Featuring die-engraved gra...
$29.67 - $33.97
Alvin Triangles
Alvin Triangles
$2.77 - $8.47
(8 Reviews)
Item #: 55444
Types: 30-60 degree and 45-90 degree triangles. Smoke colored, styrene plastic with fingerlifts. Double-bevel inking edge. Sizes to 14".
Alvin Triangles
( 8 Reviews)
Item #: 55444
$2.77 - $8.47
Types: 30-60 degree and 45-90 degree triangles. Smoke colored, styrene plastic with fingerlifts. Double-bevel inking edge. Sizes to 14".
$2.77 - $8.47
Blick Aluminum Triangles
Blick Aluminum Triangles
$6.08 - $16.77
(9 Reviews)
Item #: 56017
Blick Aluminum Triangles are durable and have a stain-resistant finish that won't mar your work surface.
Blick Aluminum Triangles
( 9 Reviews)
Item #: 56017
$6.08 - $16.77
Blick Aluminum Triangles are durable and have a stain-resistant finish that won't mar your work surface.
$6.08 - $16.77
Blick Triangles
Blick Triangles
$1.66 - $9.77
(33 Reviews)
Item #: 55447
Made of clear acrylic plastic, .080" thick, with finger lifts. Styles: 45°/90° and 30°/60°. Sizes up to 18". Also set.
Blick Triangles
( 33 Reviews)
Item #: 55447
$1.66 - $9.77
Made of clear acrylic plastic, .080" thick, with finger lifts. Styles: 45°/90° and 30°/60°. Sizes up to 18". Also set.
$1.66 - $9.77
Ludwig Precision Aluminum Triangles
Ludwig Precision Aluminum Triangles
$5.95 - $12.09
(4 Reviews)
Item #: 55747
These aluminum triangles feature inches and metric (mm/cm) calibrations and hole sizes. The edges are calibrated to 32nds along the entire English edge, and all holes are accurately calibrated and labeled for convenience.
Ludwig Precision Aluminum Triangles
( 4 Reviews)
Item #: 55747
$5.95 - $12.09
These aluminum triangles feature inches and metric (mm/cm) calibrations and hole sizes. The edges are calibrated to 32nds along the entire English edg...
$5.95 - $12.09
Staedtler Mars Adjustable Triangles
Staedtler Mars Adjustable Triangles
$35.20 - $50.20
(4 Reviews)
Item #: 55722
Made of clear acrylic with smooth edges, these transparent adjustable triangles from Staedtler permit tracing of angles from 0° to 90°. The protractor section is graduated in 1/2 degree increments.
Staedtler Mars Adjustable Triangles
( 4 Reviews)
Item #: 55722
$35.20 - $50.20
Made of clear acrylic with smooth edges, these transparent adjustable triangles from Staedtler permit tracing of angles from 0° to 90°. The protractor...
$35.20 - $50.20
Staedtler Mars Professional Triangles
Staedtler Mars Professional Triangles
$8.90
(2 Reviews)
Item #: 55708
These professional triangles from Staedtler Mars feature precision-cut straight edges for pencil work and a beveled center with a cut-out finger lift.
Staedtler Mars Professional Triangles
( 2 Reviews)
Item #: 55708
$8.90
These professional triangles from Staedtler Mars feature precision-cut straight edges for pencil work and a beveled center with a cut-out finger lift.
$8.90
Westcott Adjustable Triangles
Westcott Adjustable Triangles
$12.22 - $13.68
(5 Reviews)
Item #: 55790
These transparent adjustable triangles from Westcott permit tracing of angles from 0° to 90°. The inner gradations on the arc show the degrees of one angle, while the outer row of gradations show the degrees of the complementary angle.
Westcott Adjustable Triangles
( 5 Reviews)
Item #: 55790
$12.22 - $13.68
These transparent adjustable triangles from Westcott permit tracing of angles from 0° to 90°. The inner gradations on the arc show the degrees...
$12.22 - $13.68
Westcott Combo Set
Westcott Combo Set
$4.71 - $7.70
(7 Reviews)
Item #: 55467
Contains an inch/metric ruler, an 180 degree protractor, plus 45 degree and 60 degree triangles. Clear plastic, with legible black markings. In plastic pouch. Sizes up to 12".
Westcott Combo Set
( 7 Reviews)
Item #: 55467
$4.71 - $7.70
Contains an inch/metric ruler, an 180 degree protractor, plus 45 degree and 60 degree triangles. Clear plastic, with legible black markings. In plasti...
$4.71 - $7.70
Westcott Gridded Triangles
Westcott Gridded Triangles
$20.46 - $40.35
(5 Reviews)
Item #: 55613
These gridded triangles are made of clear acrylic and feature a stainless steel edge on one side for easy cutting. Edges are graduated in 16ths to the inch and also includes an 8ths to the inch graph feature.
Westcott Gridded Triangles
( 5 Reviews)
Item #: 55613
$20.46 - $40.35
These gridded triangles are made of clear acrylic and feature a stainless steel edge on one side for easy cutting. Edges are graduated in 16ths to the...
$20.46 - $40.35
Westcott Professional Triangles
Westcott Professional Triangles
$3.98 - $42.26
(5 Reviews)
Item #: 55703
Westcott's Professional series of triangles are crafted with smoke-tinted transparent acrylic. They are very sturdy and resist scratches and breakage. They feature an inking edge and a double bevel cut-out center for easy pick up.
Westcott Professional Triangles
( 5 Reviews)
Item #: 55703
$3.98 - $42.26
Westcott's Professional series of triangles are crafted with smoke-tinted transparent acrylic. They are very sturdy and resist scratches and breakage....
$3.98 - $42.26
Westcott Styrene Triangles
Westcott Styrene Triangles
$1.79
Item #: 55698
The Westcott Styrene Triangle 30/60 is a precision ruler ideal for drafting and artwork. Made of transparent plastic, this scale ruler has a double bevel cut-out center, lightweight design, and precise graduations with beveled edges for smudge-free inking.
Westcott Styrene Triangles
Item #: 55698
$1.79
The Westcott Styrene Triangle 30/60 is a precision ruler ideal for drafting and artwork. Made of transparent plastic, this scale ruler has a double be...
$1.79
Westcott Triangles
Westcott Triangles
$5.52 - $6.05
(5 Reviews)
Item #: 55701
These triangles are molded of clear plastic with highly legible black markings. They feature both inch and metric calibrations, an inking edge, a beveled edge, and a center cutout.
Westcott Triangles
( 5 Reviews)
Item #: 55701
$5.52 - $6.05
These triangles are molded of clear plastic with highly legible black markings. They feature both inch and metric calibrations, an inking edge, a beve...
$5.52 - $6.05
Protractors
Alecs Dual-Use Touch Screen Drafting Tool Kit
Alecs Dual-Use Touch Screen Drafting Tool Kit
$69.99
Item #: 56214
This handy dual-use drafting kit allows you to use the pencil or compass on paper or touch screen by simply changing the tip.
Alecs Dual-Use Touch Screen Drafting Tool Kit
Item #: 56214
$69.99
This handy dual-use drafting kit allows you to use the pencil or compass on paper or touch screen by simply changing the tip.
$69.99
Alvin Semicircular Protractor
Alvin Semicircular Protractor
$3.17
(4 Reviews)
Item #: 55646
Ideal for school use. This protractor features .060" clear plastic with a solid center design and beveled edges. It has clearly stamped graduations in 1° increments.
Alvin Semicircular Protractor
( 4 Reviews)
Item #: 55646
$3.17
Ideal for school use. This protractor features .060" clear plastic with a solid center design and beveled edges. It has clearly stamped graduations in...
$3.17
Helix Angle and Circle Maker
Helix Angle and Circle Maker
$5.59
(19 Reviews)
Item #: 55990
Use this handy 6"Dia two-in-one protractor and compass to draw circles and measure angles.
Helix Angle and Circle Maker
( 19 Reviews)
Item #: 55990
$5.59
Use this handy 6"Dia two-in-one protractor and compass to draw circles and measure angles.
$5.59
Helix Full Circle Protractor
Helix Full Circle Protractor
$3.16
(2 Reviews)
Item #: 55454
This Full Circle Protractor, made of transparent plastic, measures 6" in diameter. It's crossbeam is 1" thick. It's precisely divided into half degrees, from 0° to 360°.
Helix Full Circle Protractor
( 2 Reviews)
Item #: 55454
$3.16
This Full Circle Protractor, made of transparent plastic, measures 6" in diameter. It's crossbeam is 1" thick.
It's precisely divided into half d...
$3.16
Helix Swing Arm Protractor
Helix Swing Arm Protractor
$3.09
Item #: 56207
The Helix Swing Arm Protractor has an arm that rotates 180°, making it easy to measure and draw accurate angles. Measure from left to right or right to left. The protractor also includes a 6" ruler with inch and centimeter markings. Made of transparent, shatter-resistant plastic.
Helix Swing Arm Protractor
Item #: 56207
$3.09
The Helix Swing Arm Protractor has an arm that rotates 180°, making it easy to measure and draw accurate angles. Measure from left to right or right t...
$3.09
Staedtler Mars College Protractors
Staedtler Mars College Protractors
$2.25 - $6.25
(1 Reviews)
Item #: 55710
These collegiate protractors are made of tinted plastic that reduces glare. Clockwise and counter-clockwise graduations in 1/2 increments assure precise measurement. Other features include beveled edges, a center cut-out, and a finger lift.
Staedtler Mars College Protractors
( 1 Reviews)
Item #: 55710
$2.25 - $6.25
These collegiate protractors are made of tinted plastic that reduces glare. Clockwise and counter-clockwise graduations in 1/2 increments assure preci...
$2.25 - $6.25
Staedtler Math Set
Staedtler Math Set
$13.00
(1 Reviews)
Item #: 63979
The Staedtler Math Set contains all the essential tools for math class in a handy storage box. The set is built around Staedtler's Norris Club 550 School Compass, a precision compass with integrated universal adapter and safety point — ideal for students' first circle-drawing exercises.
Staedtler Math Set
( 1 Reviews)
Item #: 63979
$13.00
The Staedtler Math Set contains all the essential tools for math class in a handy storage box. The set is built around Staedtler's Norris Club 550 Sch...
$13.00
Staedtler Super Math Set
Staedtler Super Math Set
$30.00
(1 Reviews)
Item #: 56634
The Staedtler 11-pc Super Math Set contains all the essential tools a student needs for math, architecture, and engineering courses.
Staedtler Super Math Set
( 1 Reviews)
Item #: 56634
$30.00
The Staedtler 11-pc Super Math Set contains all the essential tools a student needs for math, architecture, and engineering courses.
$30.00
Westcott Protractor Ruler
Westcott Protractor Ruler
$1.32
(23 Reviews)
Item #: 55730
This transparent 180° protractor ruler features 8ths graph, 16ths to the inch, and centimeter scales. The engineer protractor ruler features centimeter and tenths to the inch graph scales. Both are laminated for durability.
Westcott Protractor Ruler
( 23 Reviews)
Item #: 55730
$1.32
This transparent 180° protractor ruler features 8ths graph, 16ths to the inch, and centimeter scales. The engineer protractor ruler features centimete...
$1.32
Westcott Student Compass and Protractor Set
Westcott Student Compass and Protractor Set
$3.75
(3 Reviews)
Item #: 55777
Great for the entry-level math student, this set includes a brightly colored, student-grade 6" safety compass and a 6" 180° protractor with a center opening.
Westcott Student Compass and Protractor Set
( 3 Reviews)
Item #: 55777
$3.75
Great for the entry-level math student, this set includes a brightly colored, student-grade 6" safety compass and a 6" 180° protractor with a center o...
$3.75
Protractors and Triangles
A protractor is an instrument used for measuring angles in degrees. Most protractors are made of plastic and have a half-circle shape, although there are also full-circle protractors. Used by engineers, architects, draftspersons, and in schools for geometry instruction, most protractors are divided into 180 equal parts.
Another essential drafting tool is the protractor triangle, which is used for drawing lines of various angles. Adjustable protractor triangles allow tracing of angles from 0° to 90°, with inner gradations that show the degrees of two different angles. Most triangles feature both inch and metric calibrations, an inking edge, and a center cutout. Some brands also include cutout templates for making circles.
Shop Blick for all-inclusive math and drafting sets that include tools such as a ruler, protractor, compass, French curve, divider, and triangle.