Best Protractors & Set Squares of 2025

Jordan Akhtar Avatar
Jordan Akhtar
Last Updated: 7 Feb 2025

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Protractors and set squares are essential tools for anyone working in the field of mathematics or engineering. These precision instruments are used to accurately measure angles and distances, allowing for precise calculations and designs. Whether you're a student, a professional, or a hobbyist, having high-quality protractors and set squares can greatly improve the accuracy and efficiency of your work. With a variety of sizes and materials available, there is a protractor and set square to suit every need.

At a Glance: Our Top Picks

Helix R36011 Oxford 31cm Set Squares Cover #TOP 1
Helix R36011 Oxford 31cm Set Squares
ftb score rating icon 9.8
Helix Oxford 15cm Geometry Set with Protractor Cover #TOP 2
Helix Oxford 15cm Geometry Set with Protractor
ftb score rating icon 9.7
SZXMDKH 10-Pack Clear Plastic Protractors Cover #TOP 3
SZXMDKH 10-Pack Clear Plastic Protractors
ftb score rating icon 9.5

Top 10 Protractors & Set Squares

#TOP 1

Helix R36011 Oxford 31cm Set Squares

R36011
blue
Helix R36011 Oxford 31cm Set Squares Cover
Helix R36011 Oxford 31cm 45 & 60 degree Set Squares

The Helix Oxford Set Squares are essential tools for precision in your measuring tasks. With a 31cm size and angles of 45 and 60 degrees, they allow you to draw accurate angles easily. The tinted blue design enhances clarity, making it simple for you to read the markings. The single colour print ensures that you can focus on your work without distraction. Additionally, the inclusion of both metric and imperial graduations guarantees that you can measure accurately, no matter your preference.

What We Like
Durable and reliable quality
Clear and easy-to-read markings
Includes both metric and imperial
Convenient 31cm size
Trusted Helix brand
#TOP 2

Helix Oxford 15cm Geometry Set with Protractor

Q68011
Clear
Helix Oxford 15cm Geometry Set with Protractor Cover
Helix Oxford 15cm Geometry Set

The Helix Oxford Geometry Set is an essential tool for anyone needing accuracy in their measurements. It includes a 15cm ruler, perfect for precise lengths, and a 180-degree protractor to assist you in drawing perfect angles. The set squares, featuring 45 and 60 degrees, help you create accurate shapes and designs. With both metric and imperial graduations, you can easily switch between measurement systems, making it convenient for various projects.

What We Like
Includes essential geometry tools
Clear and easy-to-read markings
Metric and imperial measurements
Compact and portable design
#TOP 3

SZXMDKH 10-Pack Clear Plastic Protractors

A060
10 Pcs Protractor
10 Pcs Protractor
SZXMDKH 10-Pack Clear Plastic Protractors Cover
SZXMDKH Plastic Protractor for Angle Measurement Student Math 180 Degrees, 4 Inches, Clear (10 Pcs Protractor)

The SZXMDKH Plastic Protractors are designed for easy angle measurement in your studies. Made from high-quality plastic, their transparent colour allows you to see the numbers and patterns on your paper clearly, which enhances accuracy. The smooth surface ensures effortless movement across your work, making it easier to position your protractor. Additionally, the clear scale with marking lines at 10° intervals helps you to draw precise angles, streamlining your mathematical tasks.

What We Like
High-quality plastic material
Transparent for easy reading
Smooth surface for easy movement
Clear scale for precise angles
10 protractors included
#TOP 4

Ashton and Wright Lightweight 180 Degree Protractors

‎AW-PRO
Transparent Mixed
Pack of 5
Ashton and Wright Lightweight 180 Degree Protractors Cover
Ashton and Wright - 180 Degree Protractor - 10cm - Lightweight School Protractors (Transparent Mixed, Pack of 5)

The Ashton and Wright Protractors are lightweight and durable, making them ideal for classroom use. Their slim design ensures easy handling, while the clear markings allow for precise angle measurements, helping you achieve accuracy in your work. The protractors feature smooth edges, which provide safety and comfort, especially for children. With both ascending and descending degree markings, you can easily measure a range of angles, making these protractors a valuable tool for learning and creativity.

What We Like
Lightweight and durable
Clear, easy-to-read markings
Safe smooth edges
Ideal for classroom use
Measures ascending and descending degrees
#TOP 5

Westcott 22 cm Transparent Set Square

E-10142 00
transparent
22 cm
Westcott 22 cm Transparent Set Square Cover
Westcott 22 cm Set Square with Removable Handle | Transparent Plastic Set Square with red Scale | Technical Scale & Protractor for School, University or Office | E-10142 00

The Westcott Set Square is a versatile tool perfect for your drawing and measuring needs. With a large hypotenuse of approximately 23 cm, it allows you to draw and measure angles, perpendiculars, and plumb lines with ease. The clear scale divisions in millimetres and special markings for common angles make it easy for you to achieve precise results. Additionally, the eye-catching red angle scale enhances readability, ensuring you can work efficiently on your technical drawings.

What We Like
Large size for easy use
Clear scales for precision
Eye-catching red markings
Removable handle for convenience
#TOP 6

360 Degree Protractor Set for Students

22M10CN834
360 Degree Protractor Set for Students Cover
360 Degree Protractor Angle Measure 2Pcs Protractor Circle Protractor 10cm Plastic Protractor 360 Ruler Measuring Tool for Students and Children

The MEKEET Protractor Set is a practical tool for students and professionals alike. Crafted from high-quality plastic, its durable design ensures that the indelible black and red scales remain clear over time. You will appreciate the convenience of having two protractors in various colours for your work and study needs. Measuring 10cm, this compact protractor is easy to carry and fits perfectly in your pencil case. Its transparent design and built-in scale make measurements straightforward and reading effortless.

What We Like
Durable, high-quality material
Includes two protractors
Compact and portable design
Easy to read scales
#TOP 7

Helix Protractor 10cm 180 Degree (Box of 50)

H02040
clear
Helix Protractor 10cm 180 Degree (Box of 50) Cover
Helix 10cm 180 degree Protractor (Box of 50)

The Helix 180 Degree Protractor comes in a bulk pack of 50, making it ideal for schools or offices. Its clear material allows for easy reading and accurate measurements, so you can achieve precise angles every time. The reversed scale is particularly useful for those working on complex designs, helping you to avoid any confusion when measuring. With multiple protractors in one box, you can ensure that you always have one on hand when you need it.

What We Like
Clear material for easy reading
Reversed scale for precision
Bulk pack for convenience
Ideal for schools and offices
#TOP 8

Westcott E-10304 Transparent Math Set (Pack of 4)

E-10304 00
Transparent
Westcott E-10304 Transparent Math Set (Pack of 4) Cover
Westcott E-10304 00 Math Set - Transparent (Pack of 4)

The Westcott E-10304 Math Set is a versatile collection that includes four essential tools for your mathematical needs. The transparent plastic design allows for clear visibility, making it easier to align your measurements accurately. The 12-inch ruler is perfect for drawing straight lines and measuring lengths, while the 45° and 60° set squares aid in creating precise angles for your drawings. Additionally, the 15cm protractor enables you to measure and draw angles with confidence, ensuring your work is neat and professional.

What We Like
Transparent plastic for clear visibility
Includes essential measuring tools
Precise angle measurement
Convenient pack of four
#TOP 9

10Pcs Clear 180 Degrees Protractor Set

XXLKVSK
10Pcs Clear 180 Degrees Protractor Set Cover
10Pcs 180 Clear Degrees Protractor for Maths Measurement Accuracy For Protractor Rulers Sets Painting Measuring Technical Drawing Teaching Task

The XXLKVSK Protractor Set includes 10 clear 180-degree protractors, each measuring 10.2cm by 5.6cm. Made from high-quality, durable plastic, these protractors ensure long-lasting use without bending or breaking. You will appreciate the smooth surface that glides easily on paper, making it a breeze to measure angles accurately. The clear black numbers are easy to read, with dedicated markers every 5 and 10 degrees, allowing you to achieve precise measurements in your projects.

What We Like
Durable, high-quality materials
Clear and easy-to-read markings
Smooth surface for easy use
Versatile for various tasks
#TOP 10

Mebamce 3 Pack Clear Plastic Protractors

MPUA16-MBEB
Mebamce 3 Pack Clear Plastic Protractors Cover
Mebamce 3 Pack Plastic Protractor 180 Degrees 4 Inches for Angle Measurement Student Math Classroom School Office Teachers - Clear

The Mebamce Plastic Protractors are designed for accuracy and ease of use. Their clear and precise scales allow you to measure angles effortlessly, with lines marked for every 10 degrees. Being made from high-quality plastic, they are lightweight and portable, making them perfect for students and professionals alike. The transparent design ensures that measuring and reading angles is straightforward, enhancing your efficiency whether in the classroom or at work.

What We Like
Clear and precise measurements
Lightweight and portable
Transparent for easy reading
Suitable for various users
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a set square used for?

A set square or triangle (American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline.

2. What is set square scale?

Set Squares - Technical Drafting Rulers are combination of 8" and 10" professional triangles made of clear plastic . Set Squares are used in conjunction with straightedge of drawing board to draw accurate angles. Thickness - 2.9 mm Markings on both side in mm/inch.

3. What is the shape of set squares?

Set squares, in the shape of right-angled isosceles triangles, are more than just a common tool in geometry class: they are also frequently used in the field of technical drawing.

Editor's Notes

During our protractors & set square research, we found 306 protractors & set square products and shortlisted 10 quality products. We collected and analyzed 13,150 customer reviews through our big data system to write the protractors & set squares list. We found that most customers choose protractors & set squares with an average price of £4.15.

The protractors & set squares are available for purchase. We have researched hundreds of brands and picked the top brands of protractors & set squares, including Helix, SZXMDKH, Ashton and Wright, Westcott, MEKEET.

Written by
Jordan Akhtar Avatar

Jordan Akthar owns one stationery store in Bradford, and another in Derby. He started with a corner bookshop, and now the rest is history. He is often found in his stores taking count of inventories of books and stationery. Jordan also likes to write, and this drove his passion for writing articles on stationery maintenance. He owns a blog, where in his free time, he would write DIY tips on how you can recycle and refine your stationeries.