Best Large Set Square School of 2026

Last updated on 13/02/2026
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1
Artway Adjustable Set Square - 30cm - Acrylic
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Artway Adjustable Set Square - 30cm - Acrylic

Artway
Why we love it
  • High quality acrylic material.
  • Adjustable for various angles.
  • Comes with protective case.
Main Highlights
  • 30CM ADJUSTABLE SET SQUARE – A large 30cm/12-inch set square, easily adjustable to a range of different angles from 0 to 90 degrees.
  • ARCHITECTURE/TECHNICAL DRAWING – An integral tool for anyone needing to make accurate technical drawings. Ideal students and professionals in architecture, engineering, and other technical fields.
  • DURABLE/QUALITY MATERIALS – Made from high quality acrylic plastic, bevelled edge, metal adjustment handle and accurately engraved distance markings in metric/centimetres, and 0 to 90-degree angles.
  • PROTECTIVE CASE – Our adjustable set squares come in a convenient, strong grey protective case, storing, and protecting your equipment while on the move.
  • ARTWAY TECHNICAL EQUIPMENT – As well as our 30cm/12-inch version, our adjustable set square also comes in a 20cm/8-inch version.
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9.8
Exceptional
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9.8
Exceptional
Artway

Artway Adjustable Set Square - 30cm - Acrylic

Why we love it
  • High quality acrylic material.
  • Adjustable for various angles.
  • Comes with protective case.
Main Highlights
  • 30CM ADJUSTABLE SET SQUARE – A large 30cm/12-inch set square, easily adjustable to a range of different angles from 0 to 90 degrees.
  • ARCHITECTURE/TECHNICAL DRAWING – An integral tool for anyone needing to make accurate technical drawings. Ideal students and professionals in architecture, engineering, and other technical fields.
  • DURABLE/QUALITY MATERIALS – Made from high quality acrylic plastic, bevelled edge, metal adjustment handle and accurately engraved distance markings in metric/centimetres, and 0 to 90-degree angles.
  • PROTECTIVE CASE – Our adjustable set squares come in a convenient, strong grey protective case, storing, and protecting your equipment while on the move.
  • ARTWAY TECHNICAL EQUIPMENT – As well as our 30cm/12-inch version, our adjustable set square also comes in a 20cm/8-inch version.
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Value for Money
2
STAEDTLER 567 36-45 Mars Set Square, 36cm 45/45 Degree - Transparent (Pack of 1)
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STAEDTLER 567 36-45 Mars Set Square, 36cm 45/45 Degree - Transparent (Pack of 1)

STAEDTLER
5% Off
Why we love it
  • Inking edge adds precision.
  • Durable plastic construction.
  • Translucent blue for visibility.
Main Highlights
  • Design includes inking edge
  • Made from plastic
  • Scale begins directly at the edge
  • Available in translucent blue colour
  • Calibrated in mm
Show More
9.6
Superb
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9.6
Superb
STAEDTLER

STAEDTLER 567 36-45 Mars Set Square, 36cm 45/45 Degree - Transparent (Pack of 1)

5% Off
Why we love it
  • Inking edge adds precision.
  • Durable plastic construction.
  • Translucent blue for visibility.
Main Highlights
  • Design includes inking edge
  • Made from plastic
  • Scale begins directly at the edge
  • Available in translucent blue colour
  • Calibrated in mm
Show More
3
Liquidraw Geometry Set - 5 Piece | 2 x Set Square Triangle Ruler, Semi Circle Protractor, Circle Protractor, 12" Ruler | Professional Quality | Work or School Supplies | Mm & Inch Markings | Clear
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Liquidraw Geometry Set - 5 Piece | 2 x Set Square Triangle Ruler, Semi Circle Protractor, Circle Protractor, 12" Ruler | Professional Quality | Work or School Supplies | Mm & Inch Markings | Clear

Liquidraw
Why we love it
  • Durable and precise measurement tools.
  • Versatile for various geometric tasks.
  • Easy-to-read dual markings.
Main Highlights
  • MATHS KIT ESSENTIALS: This stationery set has all the tools required for professional use in the workplace; it also contains essential supplies for learning geometry or advanced maths or science at college, university or school
  • 5 PIECE SET: This kit includes 1 x set square 45° 25cm / 10", 1 x set square 60° 30cm / 12", 1 x semi circular protractor 180°, 1 x circle protractor 360° / 5.5" & 1 x 12" ruler in clear, transparent plastic
  • MM & INCHES: With markings in inches & millimetres (easily convertible to centimetres), this set provides accurate & precise measurements with every use, perfect for school, work or art & design
  • DURABLE & TRANSPARENT: Made from strong, clear plastic, these tools allow you to see the page or work surface below; they are long-lasting, designed to resist bending or cracking for everyday use
  • EASY TO TRANSPORT: Each item in this lightweight set is 2.9 mm thick, light & portable; easy to carry in a bag, pencil case or tool set box; this set is ideal for secondary school students, architecture students, artists & more
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9.4
Superb
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9.4
Superb
Liquidraw

Liquidraw Geometry Set - 5 Piece | 2 x Set Square Triangle Ruler, Semi Circle Protractor, Circle Protractor, 12" Ruler | Professional Quality | Work or School Supplies | Mm & Inch Markings | Clear

Why we love it
  • Durable and precise measurement tools.
  • Versatile for various geometric tasks.
  • Easy-to-read dual markings.
Main Highlights
  • MATHS KIT ESSENTIALS: This stationery set has all the tools required for professional use in the workplace; it also contains essential supplies for learning geometry or advanced maths or science at college, university or school
  • 5 PIECE SET: This kit includes 1 x set square 45° 25cm / 10", 1 x set square 60° 30cm / 12", 1 x semi circular protractor 180°, 1 x circle protractor 360° / 5.5" & 1 x 12" ruler in clear, transparent plastic
  • MM & INCHES: With markings in inches & millimetres (easily convertible to centimetres), this set provides accurate & precise measurements with every use, perfect for school, work or art & design
  • DURABLE & TRANSPARENT: Made from strong, clear plastic, these tools allow you to see the page or work surface below; they are long-lasting, designed to resist bending or cracking for everyday use
  • EASY TO TRANSPORT: Each item in this lightweight set is 2.9 mm thick, light & portable; easy to carry in a bag, pencil case or tool set box; this set is ideal for secondary school students, architecture students, artists & more
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4
Staedtler Mars 567 36-60 Set Square 36 cm 60/30 Degree - Blue

Staedtler Mars 567 36-60 Set Square 36 cm 60/30 Degree - Blue

STAEDTLER
10% Off
Why we love it
  • Sleek translucent blue design.
  • Convenient inking edge feature.
  • Precise calibrated measurements in mm.
Main Highlights
  • Design includes inking edge
  • Made from plastic
  • Scale begins directly at the edge
  • Available in translucent blue colour
  • Calibrated in mm
Show More
9.4
Superb
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9.4
Superb
STAEDTLER

Staedtler Mars 567 36-60 Set Square 36 cm 60/30 Degree - Blue

10% Off
Why we love it
  • Sleek translucent blue design.
  • Convenient inking edge feature.
  • Precise calibrated measurements in mm.
Main Highlights
  • Design includes inking edge
  • Made from plastic
  • Scale begins directly at the edge
  • Available in translucent blue colour
  • Calibrated in mm
Show More
5
Pack of 2 Large Transparent Metric Triangle Ruler Set Square: 30 CM (12 Inch) - 30/60 Degree & 22 CM (9 inch) 45/90 Degree | Essential for School and Work use (CM Scale)
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Pack of 2 Large Transparent Metric Triangle Ruler Set Square: 30 CM (12 Inch) - 30/60 Degree & 22 CM (9 inch) 45/90 Degree | Essential for School and Work use (CM Scale)

Yosogo
Why we love it
  • Accurate for precise measurements.
  • Lightweight and easy to carry.
  • Durable and cost-effective design.
Main Highlights
  • ✅【ACCURATE】: Our high quality triangle metric set squares are made out of acrylic plastic which improves stability and accuracy when drafting or drawing. With its laser-etched markings that won’t fade or rub off, you can see the numbers clearly and be assured of sharp graduation and precise scale.
  • ✅【EASY TO USE】: These large triangle rulers are easy to grip with its hollow cut out centres and easy to use on any surfaces. The black-on-blue design eases distinction of lines and numbers so you can read comfortably, preventing unnecessary eye strain. In addition, these lightweight square sets are only half the weight of a glass which makes it easy for you to carry around for school and work.
  • ✅【WIDE APPLICATION】: Our acrylic triangle set square rulers are highly useful tools for both school and work. These are suitable for architects, engineers, drafting technicians, artists, designers, students, teachers and more professional and precise applications.
  • ✅【VALUE FOR MONEY】: These set square triangle rulers are made out of plastic so that they are not only light-weighted but affordable. On top of that, they are shatterproof with up to 17 times more impact resistance compared to ordinary glass, making them last longer and worth your money.
  • ✅【A LOT OF HAPPY CUSTOMERS】: We have had many happy customers which have made us a professional’s choice for drafting tools and drawing supplies for many years now. It could mean a lot to us if you could let us bridge the gap for you between ideas and innovations. If for any reason you are having trouble with these set squares; please contact us online, and we will make things right.
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9.3
Superb
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9.3
Superb
Yosogo

Pack of 2 Large Transparent Metric Triangle Ruler Set Square: 30 CM (12 Inch) - 30/60 Degree & 22 CM (9 inch) 45/90 Degree | Essential for School and Work use (CM Scale)

Why we love it
  • Accurate for precise measurements.
  • Lightweight and easy to carry.
  • Durable and cost-effective design.
Main Highlights
  • ✅【ACCURATE】: Our high quality triangle metric set squares are made out of acrylic plastic which improves stability and accuracy when drafting or drawing. With its laser-etched markings that won’t fade or rub off, you can see the numbers clearly and be assured of sharp graduation and precise scale.
  • ✅【EASY TO USE】: These large triangle rulers are easy to grip with its hollow cut out centres and easy to use on any surfaces. The black-on-blue design eases distinction of lines and numbers so you can read comfortably, preventing unnecessary eye strain. In addition, these lightweight square sets are only half the weight of a glass which makes it easy for you to carry around for school and work.
  • ✅【WIDE APPLICATION】: Our acrylic triangle set square rulers are highly useful tools for both school and work. These are suitable for architects, engineers, drafting technicians, artists, designers, students, teachers and more professional and precise applications.
  • ✅【VALUE FOR MONEY】: These set square triangle rulers are made out of plastic so that they are not only light-weighted but affordable. On top of that, they are shatterproof with up to 17 times more impact resistance compared to ordinary glass, making them last longer and worth your money.
  • ✅【A LOT OF HAPPY CUSTOMERS】: We have had many happy customers which have made us a professional’s choice for drafting tools and drawing supplies for many years now. It could mean a lot to us if you could let us bridge the gap for you between ideas and innovations. If for any reason you are having trouble with these set squares; please contact us online, and we will make things right.
Show More
6
STAEDTLER 567 31-60 Mars Set Square, 31 cm 60/30 Degree - Transparent Blue (Pack of 1)
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STAEDTLER 567 31-60 Mars Set Square, 31 cm 60/30 Degree - Transparent Blue (Pack of 1)

STAEDTLER
7% Off
Why we love it
  • Transparent blue for clear visibility.
  • Scale starts at the edge.
  • Precise measurements in millimeters.
Main Highlights
  • Plastic, transparent blue
  • With inking edge
  • Scale begins directly at the edge
  • 567 31-60
  • Calibrated in mm
Show More
9.1
Superb
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9.1
Superb
STAEDTLER

STAEDTLER 567 31-60 Mars Set Square, 31 cm 60/30 Degree - Transparent Blue (Pack of 1)

7% Off
Why we love it
  • Transparent blue for clear visibility.
  • Scale starts at the edge.
  • Precise measurements in millimeters.
Main Highlights
  • Plastic, transparent blue
  • With inking edge
  • Scale begins directly at the edge
  • 567 31-60
  • Calibrated in mm
Show More
7
Linex Maths Geometry Set, 10-Piece Exam Kit with Transparent Case, Black, Includes Self-Centring Compasses, Protractor, Ruler, Set Squares & Eraser
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Linex Maths Geometry Set, 10-Piece Exam Kit with Transparent Case, Black, Includes Self-Centring Compasses, Protractor, Ruler, Set Squares & Eraser

Linex
Why we love it
  • Complete set for math success.
  • Clear visibility with transparent tools.
  • Durable case for easy storage.
Main Highlights
  • COMPLETE 10-PIECE GEOMETRY SET FOR MATHS – Ideal for schoolwork, revision, and exams, providing all essential mathematical instruments in one practical set
  • INCLUDES TWO SELF-CENTRING COMPASSES & REFILL LEADS – Allows accurate circle drawing and precise measurements, with a pencil and replacement leads included for continued use
  • CLEAR MEASURING TOOLS FOR ACCURATE WORK – Transparent 15 cm ruler, protractor, and set squares ensure clear visibility of the page for neat, precise drawings and calculations
  • DURABLE TRANSPARENT CASE WITH BLUE ACCENTS – Supplied in a clear plastic box with blue detailing, keeping tools organised, protected, and easy to identify in school bags or desks
  • EASY TO TRANSPORT & EXAM READY – Compact plastic case keeps everything neatly stored and ready for use in classrooms, revision sessions, or exams
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9.0
Superb
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9.0
Superb
Linex

Linex Maths Geometry Set, 10-Piece Exam Kit with Transparent Case, Black, Includes Self-Centring Compasses, Protractor, Ruler, Set Squares & Eraser

Why we love it
  • Complete set for math success.
  • Clear visibility with transparent tools.
  • Durable case for easy storage.
Main Highlights
  • COMPLETE 10-PIECE GEOMETRY SET FOR MATHS – Ideal for schoolwork, revision, and exams, providing all essential mathematical instruments in one practical set
  • INCLUDES TWO SELF-CENTRING COMPASSES & REFILL LEADS – Allows accurate circle drawing and precise measurements, with a pencil and replacement leads included for continued use
  • CLEAR MEASURING TOOLS FOR ACCURATE WORK – Transparent 15 cm ruler, protractor, and set squares ensure clear visibility of the page for neat, precise drawings and calculations
  • DURABLE TRANSPARENT CASE WITH BLUE ACCENTS – Supplied in a clear plastic box with blue detailing, keeping tools organised, protected, and easy to identify in school bags or desks
  • EASY TO TRANSPORT & EXAM READY – Compact plastic case keeps everything neatly stored and ready for use in classrooms, revision sessions, or exams
Show More
8
Set of Set Square - 3 Large 3 Small, Triangle Ruler with Handle, Triangle Ruler for Measuring Lengths and Angles, Triangles for Classroom, Drawing, and Design
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Set of Set Square - 3 Large 3 Small, Triangle Ruler with Handle, Triangle Ruler for Measuring Lengths and Angles, Triangles for Classroom, Drawing, and Design

Kaiyzo
Why we love it
  • Versatile for multiple applications.
  • Durable and scratch-resistant material.
  • Convenient handles for easy use.
Main Highlights
  • Versatile Design: This 6-piece set with 3 large and 3 small triangles plus handles features a 2-in-1 design for measuring lengths and angles, ideal for drafting, design, and modeling.
  • Quality Material: Made from durable, scratch-resistant plastic, these triangles offer a smooth, transparent surface with clear, long-lasting markings for comfortable, precise work.
  • Convenient Handle: Each triangle has a matching handle that easily inserts into the center hole, ensuring stable, smooth gliding—perfect for long sessions in class or the office.
  • Easy to Read: The transparent surface with bold, wear-resistant black printing ensures excellent readability in various lighting conditions, enhancing drawing efficiency.
  • Complete Set: Includes 3 large triangles (15.9×15.9×22.5cm/2.2mm) and 3 small triangles (11.1×11.1×15.7cm/1.7mm), each individually packed, with 3 large and 3 small handles—ready to use for school, office, or home.
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9.0
Superb
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9.0
Superb
Kaiyzo

Set of Set Square - 3 Large 3 Small, Triangle Ruler with Handle, Triangle Ruler for Measuring Lengths and Angles, Triangles for Classroom, Drawing, and Design

Why we love it
  • Versatile for multiple applications.
  • Durable and scratch-resistant material.
  • Convenient handles for easy use.
Main Highlights
  • Versatile Design: This 6-piece set with 3 large and 3 small triangles plus handles features a 2-in-1 design for measuring lengths and angles, ideal for drafting, design, and modeling.
  • Quality Material: Made from durable, scratch-resistant plastic, these triangles offer a smooth, transparent surface with clear, long-lasting markings for comfortable, precise work.
  • Convenient Handle: Each triangle has a matching handle that easily inserts into the center hole, ensuring stable, smooth gliding—perfect for long sessions in class or the office.
  • Easy to Read: The transparent surface with bold, wear-resistant black printing ensures excellent readability in various lighting conditions, enhancing drawing efficiency.
  • Complete Set: Includes 3 large triangles (15.9×15.9×22.5cm/2.2mm) and 3 small triangles (11.1×11.1×15.7cm/1.7mm), each individually packed, with 3 large and 3 small handles—ready to use for school, office, or home.
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9
Helix R36011 Oxford 31cm 45 & 60 degree Set Squares

Helix R36011 Oxford 31cm 45 & 60 degree Set Squares

Helix
37% Off
Why we love it
  • Clarity-enhancing tinted blue.
  • Accurate metric and imperial graduations.
  • Trusted Helix Oxford quality.
Main Highlights
  • 31cm set of set squares: 45 & 60 degree
  • Tinted blue for clarity
  • Easy to read, single colour print
  • Metric and imperial graduations for accurate measuring
  • Part of the traditional Helix Oxford range, A brand trusted for its premium quality and reliability
Show More
8.8
Excellent
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8.8
Excellent
Helix

Helix R36011 Oxford 31cm 45 & 60 degree Set Squares

37% Off
Why we love it
  • Clarity-enhancing tinted blue.
  • Accurate metric and imperial graduations.
  • Trusted Helix Oxford quality.
Main Highlights
  • 31cm set of set squares: 45 & 60 degree
  • Tinted blue for clarity
  • Easy to read, single colour print
  • Metric and imperial graduations for accurate measuring
  • Part of the traditional Helix Oxford range, A brand trusted for its premium quality and reliability
Show More
10
Helix Oxford Maths Set with Storage Tin - 10 Piece Maths Equipment Set
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Helix Oxford Maths Set with Storage Tin - 10 Piece Maths Equipment Set

Helix
27% Off
Why we love it
  • Top UK Maths Set.
  • Includes all essential tools.
  • Safe for school use.
Main Highlights
  • Iconic and reliable with its iconic metal embossed tin featuring the Helix Oxford logo, this 10-piece set is a timeless classic that has been trusted by generations of mathematicians and students
  • Comprehensive set: This comprehensive set ensures you have all the essential tools to excel in your mathematical endeavours. This maths set is meticulously crafted to meet the highest standards. Inside the traditional metal tin, you'll find a self-centring metal compass for precise circles and arcs, a 9cm graphite pencil designed for use with the compass.
  • Essentials: You will also find an eraser for clean and effortless corrections, a pencil sharpener to keep your pencil perfectly sharp, and a 15cm/6" clear ruler with metric and imperial graduations for accurate measurements.
  • Versatile and essential tools: The Helix Oxford Maths Set goes beyond the basics. It includes both 45° and 60° set squares for constructing geometric shapes, a 180° protractor for angle measurement, a 10mm lettering stencil for neat and consistent lettering, and a useful school timetable and Maths fact sheet for quick reference.
  • Safety and environmentally friendly: Safety is paramount, especially in educational settings. The compass features a safety point, making it safe for use in schools, and the pencil sharpener is equipped with an anti-tamper screw for added safety. Additionally, the eraser is PVC, phthalate, and latex-free, ensuring a safe and eco-friendly choice for your stationery needs.
  • Embrace the legacy of excellence: For decades, the Helix Oxford Maths Set has been the go-to choice for students, teachers, and professionals. Its reputation for quality, durability, and precision is unmatched. Join those who have experienced the Helix difference and unlock your mathematical potential.
Show More
8.7
Excellent
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8.7
Excellent
Helix

Helix Oxford Maths Set with Storage Tin - 10 Piece Maths Equipment Set

27% Off
Why we love it
  • Top UK Maths Set.
  • Includes all essential tools.
  • Safe for school use.
Main Highlights
  • Iconic and reliable with its iconic metal embossed tin featuring the Helix Oxford logo, this 10-piece set is a timeless classic that has been trusted by generations of mathematicians and students
  • Comprehensive set: This comprehensive set ensures you have all the essential tools to excel in your mathematical endeavours. This maths set is meticulously crafted to meet the highest standards. Inside the traditional metal tin, you'll find a self-centring metal compass for precise circles and arcs, a 9cm graphite pencil designed for use with the compass.
  • Essentials: You will also find an eraser for clean and effortless corrections, a pencil sharpener to keep your pencil perfectly sharp, and a 15cm/6" clear ruler with metric and imperial graduations for accurate measurements.
  • Versatile and essential tools: The Helix Oxford Maths Set goes beyond the basics. It includes both 45° and 60° set squares for constructing geometric shapes, a 180° protractor for angle measurement, a 10mm lettering stencil for neat and consistent lettering, and a useful school timetable and Maths fact sheet for quick reference.
  • Safety and environmentally friendly: Safety is paramount, especially in educational settings. The compass features a safety point, making it safe for use in schools, and the pencil sharpener is equipped with an anti-tamper screw for added safety. Additionally, the eraser is PVC, phthalate, and latex-free, ensuring a safe and eco-friendly choice for your stationery needs.
  • Embrace the legacy of excellence: For decades, the Helix Oxford Maths Set has been the go-to choice for students, teachers, and professionals. Its reputation for quality, durability, and precision is unmatched. Join those who have experienced the Helix difference and unlock your mathematical potential.
Show More

We scanned 222 products

We reviewed these offers relevant to the Large Set Square School within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Artway, STAEDTLER, Liquidraw, Yosogo, Linex, Kaiyzo, Helix, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Large Set Square School in the market, we considered we took a deep dive into 1111 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

  • The clear winner of our analysis is Artway Adjustable Set Square - 30cm - Acrylic. We love many things about this product by Artway. What sets it apart from the competition is High quality acrylic material, Adjustable for various angles, Comes with protective case.
  • The best value product for most shoppers and where user satisfaction is continuously the highest is STAEDTLER 567 36-45 Mars Set Square, 36cm 45/45 Degree - Transparent (Pack of 1) by STAEDTLER based on online reviews by bloggers, experts and online shoppers.
  • The biggest bargain at the moment for Large Set Square School and the best cost-to-value ratio is Helix R36011 Oxford 31cm 45 & 60 degree Set Squaresat Helix with a 37% discount.
  • Our list of the best Large Set Square School is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.