Best Plastic Carpentry Squares of 2025

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Plastic carpentry squares are versatile measuring tools used by carpenters, builders and DIY enthusiasts. Made from durable plastic, they come in a range of sizes and are designed to provide accurate measurements for a variety of tasks such as marking right angles, checking for squareness and measuring angles. These squares are lightweight, easy to handle and can withstand wear and tear. They are an essential tool for anyone involved in woodworking or construction projects, providing precision and accuracy to ensure a professional finish.
At a Glance: Our Top Picks
Top 5 Plastic Carpentry Squares
WORKPRO 180mm Speed Square and 300mm Set
The WORKPRO Square Set is a versatile carpentry tool kit designed for precision and ease of use. Made from high-quality aluminium alloy and stainless steel, the tools resist corrosion and offer durability, ensuring they won't easily break like plastic. The combination square includes a level, and laser-engraved scales enhance accuracy for your measurements. With its multifunctional design, you can effortlessly measure various angles and dimensions, making your woodworking projects more efficient. The user-friendly design allows you to quickly mark angles from 0 to 90 degrees, saving you valuable time during your work.
OX Tools Trade Roofing Plastic Rafters Square Set
The OX Trade Rafters Square Set includes two squares, 180mm and 300mm, providing you with versatile measurement options for carpentry and roofing tasks. Made from heavy-duty ABS plastic, these squares are durable enough to withstand demanding construction environments. The easy-to-read gradations ensure you can make precise measurements and angle markings, enhancing your accuracy. Additionally, the wide base allows for a secure hold on materials, giving you stability during your projects, whether you're cutting or marking.
Adjustable Sliding T Bevel Ruler by SEIWEI
The SEIWEI T Bevel Ruler features a stainless steel blade that ensures durability and resistance to deformation, making it a reliable choice for your projects. You can easily adjust the movable square to any angle by rotating the central knob, providing you with professional precision when needed. This ruler also serves as a depth gauge, allowing you to transfer angles conveniently, which is especially beneficial for intricate designs. The high-quality plastic handle ensures comfort during use, allowing you to work for extended periods without discomfort.
PRESCH 300mm Metric Combination Square Tool
The PRESCH Combination Square is an accurate carpentry tool designed to meet various woodworking needs. With its glare-free, precise centimetre ruler, you can achieve exact measurements with ease. The multifunctional design allows you to create 45-degree and right angles, making it ideal for multiple tasks. Its durable construction, featuring a cast-zinc body and anti-rust stainless steel ruler, ensures longevity while maintaining accuracy. Additionally, the all-in-one functionality means you won't need to invest in separate tools, simplifying your woodworking projects.
Dapetz 6-Inch Adjustable Carpentry Square Set
The Dapetz Carpentry Square offers exceptional quality with its sturdy stainless steel construction, ensuring durability and resistance to rust. Measuring 6 inches, it provides precise 90 and 45-degree angles, making it ideal for various carpentry tasks. The ergonomic handle allows you to take measurements comfortably and accurately, enhancing your woodworking experience. Additionally, this multifunctional tool is perfect for measuring depths, heights, and scribing, thus serving as an essential companion for any DIY enthusiast.
Frequently Asked Questions (FAQs)
1. What is a carpenter square called?
The steel square is a tool used in carpentry. ... Today the steel square is more commonly referred to as the framing square or carpenter's square. It consists of a long, wider arm and a shorter, narrower arm, which meet at an angle of 90 degrees (a right angle).
2. What are squares used for in carpentry?
A square is a tool used for marking and referencing a 90° angle, though mitre squares are used for 45° angles. Squares see common use in woodworking, metalworking, construction and technical drawing. Some squares incorporate a scale for measuring distances (a ruler) or for calculating angles.
3. What are the four features of a carpenter's square?
One should not be fooled by the simplicity of its appearance, however: the carpenter's square contains numerous scales, including a diagonal scale, a board foot scale, and an octagonal scale.
During our plastic carpentry square research, we found 182 plastic carpentry square products and shortlisted 5 quality products. We collected and analyzed 36,724 customer reviews through our big data system to write the plastic carpentry squares list. We found that most customers choose plastic carpentry squares with an average price of £12.39.
The plastic carpentry squares are available for purchase. We have researched hundreds of brands and picked the top brands of plastic carpentry squares, including WORKPRO, OX Tools, SEIWEI, PRESCH, Dapetz. The seller of top 1 product has received honest feedback from 3,359 consumers with an average rating of 4.9.

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.