Best Set Square Plastic Large of 2026

Last updated on 30/04/2026
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1
Speed Square Set, AivaToba 12 Inch Aluminum Alloy Metric Triangle Ruler, 12" Large Carpenters Square for Angle Measuring and Marking.
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Speed Square Set, AivaToba 12 Inch Aluminum Alloy Metric Triangle Ruler, 12" Large Carpenters Square for Angle Measuring and Marking.

AivaToba
15% Off
Why we love it
  • Precision measuring made easy.
  • Durable, high-quality construction.
  • Versatile for various projects.
Main Highlights
  • 【Multifunctional 12" carpenters square】: This 12-inch carpenters square has an angle measurement range of 0 - 90 ° ; Included conversion table can improve your working efficiency; Front and back scales are clear and accurate, which can provide you with precise measurement results.
  • 【Uniquely designed large speed square】: The hollow auxiliary graphic frame in the middle of the rafter square can be used to quickly draw lines and graphs on the board, and the base holds the triangle stable on the board, allowing you to easily make horizontal or bevelled cuts to improve the precision of your cuts.
  • 【High-quality 12 inch triangular square】: Made of high quality aluminium alloy, high hardness, matte black paint, good finish, effectively preventing strong light reflection, sturdy and durable, not easy to rust and wear, not easy to break. The corners of the carpenters square are passivated, no need to worry about scratching your hand.
  • 【Widely Used 12" set square】: Carpenters square can be used in carpentry and decorative industries, handyman, etc.; It can also be widely used for design drawing, direct cutting, decorative design, angle measurement, material mechanical measurement, office use.
  • 【Creative Gifts for engineers】: This rafter square tool makes your work easier, less time-consuming and more convenient, making it an ideal craft gift. Both professionals and DIY enthusiasts will love it!
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9.8
Exceptional
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9.8
Exceptional
AivaToba

Speed Square Set, AivaToba 12 Inch Aluminum Alloy Metric Triangle Ruler, 12" Large Carpenters Square for Angle Measuring and Marking.

15% Off
Why we love it
  • Precision measuring made easy.
  • Durable, high-quality construction.
  • Versatile for various projects.
Main Highlights
  • 【Multifunctional 12" carpenters square】: This 12-inch carpenters square has an angle measurement range of 0 - 90 ° ; Included conversion table can improve your working efficiency; Front and back scales are clear and accurate, which can provide you with precise measurement results.
  • 【Uniquely designed large speed square】: The hollow auxiliary graphic frame in the middle of the rafter square can be used to quickly draw lines and graphs on the board, and the base holds the triangle stable on the board, allowing you to easily make horizontal or bevelled cuts to improve the precision of your cuts.
  • 【High-quality 12 inch triangular square】: Made of high quality aluminium alloy, high hardness, matte black paint, good finish, effectively preventing strong light reflection, sturdy and durable, not easy to rust and wear, not easy to break. The corners of the carpenters square are passivated, no need to worry about scratching your hand.
  • 【Widely Used 12" set square】: Carpenters square can be used in carpentry and decorative industries, handyman, etc.; It can also be widely used for design drawing, direct cutting, decorative design, angle measurement, material mechanical measurement, office use.
  • 【Creative Gifts for engineers】: This rafter square tool makes your work easier, less time-consuming and more convenient, making it an ideal craft gift. Both professionals and DIY enthusiasts will love it!
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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
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)

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
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
7% 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
9.6
Superb
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9.6
Superb
STAEDTLER

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

7% 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
4
2piece Triangle Ruler Square Set 31cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent
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2piece Triangle Ruler Square Set 31cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent

Generic
Why we love it
  • Durable polystyrene material ensures longevity.
  • Protractor feature enhances measuring accuracy.
  • Versatile for classroom and home use.
Main Highlights
  • Size - 2 pieces of large clear triangle rulers, one of the right-angle sides of the 45/90-degree ruler is 30.5cm/12.2 inch and 21.5cm/8.5 inch; the 30/60 degree ruler has a longer bevel side of 31cm/12 inch long and the shorter right-angle side is 17cm/7 inch
  • Material - The triangle rulers are made of polystyrene plastic, durable, not easy to break for using a long time. They can be placed in your pencil case, or on the office desk to save space
  • Feature - The hollow center of 45/ 90 degrees triangle is a protractor that can be applied to measure 0-180 degrees, and the scale is accurate to 1 degree, helping you to quickly measure the value.
  • Application - The measuring ruler kits can use them to measure, and draw geometric figures, etc., providing you with large convenience, suitable for a variety of applications in classrooms, offices, and homes, for artists, designers, architects, engineers and so on.
  • Package Includes - 1 x 45/ 90 Degrees triangle ruler, 1 x 30/ 60 Degrees triangle ruler
Show More
9.6
Superb
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9.6
Superb
Generic

2piece Triangle Ruler Square Set 31cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent

Why we love it
  • Durable polystyrene material ensures longevity.
  • Protractor feature enhances measuring accuracy.
  • Versatile for classroom and home use.
Main Highlights
  • Size - 2 pieces of large clear triangle rulers, one of the right-angle sides of the 45/90-degree ruler is 30.5cm/12.2 inch and 21.5cm/8.5 inch; the 30/60 degree ruler has a longer bevel side of 31cm/12 inch long and the shorter right-angle side is 17cm/7 inch
  • Material - The triangle rulers are made of polystyrene plastic, durable, not easy to break for using a long time. They can be placed in your pencil case, or on the office desk to save space
  • Feature - The hollow center of 45/ 90 degrees triangle is a protractor that can be applied to measure 0-180 degrees, and the scale is accurate to 1 degree, helping you to quickly measure the value.
  • Application - The measuring ruler kits can use them to measure, and draw geometric figures, etc., providing you with large convenience, suitable for a variety of applications in classrooms, offices, and homes, for artists, designers, architects, engineers and so on.
  • Package Includes - 1 x 45/ 90 Degrees triangle ruler, 1 x 30/ 60 Degrees triangle ruler
Show More
5
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
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
9.5
Superb
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9.5
Superb
STAEDTLER

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

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
6
STAEDTLER 567 26-45 Mars Set Square, 25 cm 45/45 Degree - Transparent (Pack of 1)

STAEDTLER 567 26-45 Mars Set Square, 25 cm 45/45 Degree - Transparent (Pack of 1)

STAEDTLER
Why we love it
  • Stylish inking edge design.
  • Durable plastic material used.
  • 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
9.5
Superb
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9.5
Superb
STAEDTLER

STAEDTLER 567 26-45 Mars Set Square, 25 cm 45/45 Degree - Transparent (Pack of 1)

Why we love it
  • Stylish inking edge design.
  • Durable plastic material used.
  • 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
7
2 PCS Triangle Ruler Square Set 31cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent, triangle ruler
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2 PCS Triangle Ruler Square Set 31cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent, triangle ruler

generic
Why we love it
  • Durable polystyrene plastic material.
  • Accurate protractor for measuring angles.
  • Perfect for various applications.
Main Highlights
  • Size - 2 pcs of large clear triangle rulers, one of the right-angle sides of the 45/90-degree ruler is 30.5cm/12.2 inch and 21.5cm/8.5 inch; the 30/60 degree ruler has a longer bevel side of 31cm/12 inch long and the shorter right-angle side is 17cm/7 inch.
  • Material - The triangle rulers are made of polystyrene plastic, durable, not easy to break for using a long time.
  • The hollow center of 45/ 90 degrees triangle is a protractor that can be applied to measure 0-180 degrees, and the scale is accurate to 1 degree, helping you to quickly measure the value.
  • The measuring ruler kits can use them to measure, and draw geometric figures, etc., providing you with large convenience, suitable for a variety of applications in classrooms, offices, and homes, for artists, designers, architects, engineers etc.
  • 2PCS, 1 x 45/ 90 Degrees triangle ruler, 1 x 30/ 60 Degrees triangle ruler
Show More
9.4
Superb
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9.4
Superb
generic

2 PCS Triangle Ruler Square Set 31cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent, triangle ruler

Why we love it
  • Durable polystyrene plastic material.
  • Accurate protractor for measuring angles.
  • Perfect for various applications.
Main Highlights
  • Size - 2 pcs of large clear triangle rulers, one of the right-angle sides of the 45/90-degree ruler is 30.5cm/12.2 inch and 21.5cm/8.5 inch; the 30/60 degree ruler has a longer bevel side of 31cm/12 inch long and the shorter right-angle side is 17cm/7 inch.
  • Material - The triangle rulers are made of polystyrene plastic, durable, not easy to break for using a long time.
  • The hollow center of 45/ 90 degrees triangle is a protractor that can be applied to measure 0-180 degrees, and the scale is accurate to 1 degree, helping you to quickly measure the value.
  • The measuring ruler kits can use them to measure, and draw geometric figures, etc., providing you with large convenience, suitable for a variety of applications in classrooms, offices, and homes, for artists, designers, architects, engineers etc.
  • 2PCS, 1 x 45/ 90 Degrees triangle ruler, 1 x 30/ 60 Degrees triangle ruler
Show More
8
2 PCS Triangle Ruler Square Set 18cm, 16cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent, ruler set
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2 PCS Triangle Ruler Square Set 18cm, 16cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent, ruler set

DCYQAIN
Why we love it
  • Durable polystyrene plastic construction.
  • Accurate measurements for precision tasks.
  • Versatile for various applications.
Main Highlights
  • Package Includes - 1 x 45/ 90 Degrees triangle ruler, 1 x 30/ 60 Degrees triangle ruler, 2PCS.
  • Size - 2 pieces of large clear triangle rulers, one of the right-angle sides of the 45/90-degree ruler is 16cm/6.3 inch and 12cm/4.7 inch; the 30/60 degree ruler has a longer bevel side of 18cm/7 inch long and the shorter right-angle side is 10cm/4 inch.
  • Material - The triangle rulers are made of polystyrene plastic, durable, not easy to break for using a long time. They can be placed in your pencil case, or on the office desk to save space.
  • Feature - The hollow center of 45/ 90 degrees triangle is a protractor that can be applied to measure 0-180 degrees, and the scale is accurate to 1 degree, helping you to quickly measure the value.triangle ruler
  • Application - The measuring ruler kits can use them to measure, and draw geometric figures, etc., providing you with large convenience, suitable for a variety of applications in classrooms, offices, and homes, for artists, designers, architects, engineers etc.
Show More
9.3
Superb
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9.3
Superb
DCYQAIN

2 PCS Triangle Ruler Square Set 18cm, 16cm 30/60 and 45/90 Degrees Measuring Tools for Classrooms Home Office, Transparent, ruler set

Why we love it
  • Durable polystyrene plastic construction.
  • Accurate measurements for precision tasks.
  • Versatile for various applications.
Main Highlights
  • Package Includes - 1 x 45/ 90 Degrees triangle ruler, 1 x 30/ 60 Degrees triangle ruler, 2PCS.
  • Size - 2 pieces of large clear triangle rulers, one of the right-angle sides of the 45/90-degree ruler is 16cm/6.3 inch and 12cm/4.7 inch; the 30/60 degree ruler has a longer bevel side of 18cm/7 inch long and the shorter right-angle side is 10cm/4 inch.
  • Material - The triangle rulers are made of polystyrene plastic, durable, not easy to break for using a long time. They can be placed in your pencil case, or on the office desk to save space.
  • Feature - The hollow center of 45/ 90 degrees triangle is a protractor that can be applied to measure 0-180 degrees, and the scale is accurate to 1 degree, helping you to quickly measure the value.triangle ruler
  • Application - The measuring ruler kits can use them to measure, and draw geometric figures, etc., providing you with large convenience, suitable for a variety of applications in classrooms, offices, and homes, for artists, designers, architects, engineers etc.
Show More
9
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
9% Off
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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9.1
Superb
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9.1
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

9% Off
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
Show More
10
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
  • Includes triangle rulers for drafting and drawing, suitable for measuring and creating angles on paper surfaces
  • Made from acrylic plastic; rigid structure for consistent shape; transparent body for visibility during use
  • Hollow centre design for grip; lightweight construction for handling and portability, suitable for school and office use
Show More
9.0
Superb
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9.0
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
  • Includes triangle rulers for drafting and drawing, suitable for measuring and creating angles on paper surfaces
  • Made from acrylic plastic; rigid structure for consistent shape; transparent body for visibility during use
  • Hollow centre design for grip; lightweight construction for handling and portability, suitable for school and office use
Show More

We scanned 578 products

We reviewed these offers relevant to the Set Square Plastic Large 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 AivaToba, STAEDTLER, Generic, generic, DCYQAIN, Liquidraw, Yosogo, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Set Square Plastic Large in the market, we considered we took a deep dive into 2891 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: