5 Best Speed Square for Precision Work - EngiMarket

5 Best Speed Square for Precision Work

Disclaimer: Image courtesy of Amazon. As an Amazon Associate I earn from qualifying purchases.

In this post, we will explore five of the top speed squares on the market that are ideal for precision work. Whether you are a seasoned professional or a DIY enthusiast, having the right tool for accurate measurements and angles is crucial for the success of your projects. Let’s dive in and discover the best options available to help you achieve precise results in your woodworking or construction tasks.

1
IRWIN Rafter Square, Aluminum, Blue, 7-Inch
✯ Great tool option ✯
Shop now Amazon.com
9.8
2
Swanson T0118 8" Composite Speed Square
9.6
3
SWANSON SW1201K Value Pack Speed Squares
Top-notch quality
Shop now Amazon.com
9.6
4
SWANSON S0101 7 Inch Speed Square
Handy and sturdy
Shop now Amazon.com
9.6
1

IRWIN Rafter Square, Aluminum, Blue, 7-Inch

Amazon.com
9.8
Great tool option
The IRWIN Tools Rafter Square is a durable, versatile tool with easy-to-read markings and a built-in ruler for added convenience, making it a great value for its price. However, some users may find the cut outs limited and the marks on the tool’s face crowded.
Advantages
  • Easy to read numbers
  • Sturdy and perfect size
  • Great finish for easy reading
  • Great tool at a great price and durable
  • Built-in ruler for added convenience
Drawbacks
  • Limited cut outs
  • Crowded marks on the face of the tool

The IRWIN Tools Rafter Square features a durable rust-proof aluminum body with permanent deep markings for easy visibility. It serves multiple functions as a protractor, saw guide, and tri & miter square. Despite some mixed reviews regarding accuracy, the square’s great finish makes it easy to read, appealing to users who prioritize visibility in their tools. Overall, it is praised for its sturdiness, versatility, and ease of use, making it a valuable addition to any toolkit.

Durable and Versatile Design
  • Durable rust-proof aluminum body
  • Permanent deep markings
  • Multi-functional: can be used as a protractor, saw guide, and tri and mitre square
2

Swanson T0118 8" Composite Speed Square

Amazon.com
9.6
Great value!
The Swanson Tool Co T0118 8-inch Orange Composite Speedlite Speed Square Layout Tool is a durable and lightweight option perfect for DIY projects, thanks to its bright color for easy visibility. While the soft plastic material may dent easily, its price point and functionality make it a worthwhile purchase for your tool collection.
Pros
  • Highly durable
  • Lightweight
  • Useful for DIY projects
  • Reasonably priced
  • Bright color for easy visibility
Cons
  • Soft plastic that can be easily dented or scratched
  • Prefer metallic material but for the price, it’s acceptable

The Swanson Tool Co T0118 8-inch Orange Composite Speedlite Speed Square Layout Tool is an award-winning favorite among professionals and DIY enthusiasts alike. Made of durable high-impact polystyrene, this innovative tool combines 5 functions in 1: Try Square, Miter Square, Saw guide, Line scriber, and Protractor. Ideal for delicate materials like siding, its lightweight construction won’t mar soft finishes. With 1/8-inch spaced notches for precision marking and a Center line guide, this Speedlite Square is both versatile and reliable. Excels in accuracy and usability, making it a valuable addition to your toolbox for various projects.

Versatile and Durable Speed Square
  • 8-inch size for siding
  • Center line (C/L) guide for aligning round stock
  • Beveled edge for easy reading
  • 1/8-inch spaced notches for scribing lines
  • Lightweight high-impact structural composite material
3

SWANSON SW1201K Value Pack Speed Squares

Amazon.com
9.6
Top-notch quality
The SWANSON Tool Co., Inc SW1201K Value Pack featuring the 7-inch Speed Square and Big 12 Speed Square offers professional-grade quality with clearly defined markings and durable construction. While it may have a learning curve, its multiple gradations and versatility make it a valuable tool for various carpentry tasks.
Pros
  • Professional-grade quality
  • Clearly defined markings and numbers
  • Durable and long-lasting
  • Useful for various carpentry tasks
Cons
  • Doesn’t slide/reposition easily on wood compared to plastic-fiber square
  • Might not be as beginner-friendly due to learning curve in mastering its use

This SWANSON Tool Co., Inc SW1201K Value Pack includes the 7-inch Speed Square and the Big 12 Speed Square, offering incredible versatility for a variety of tasks like marking angles and making square cuts on boards. Both squares are made of heavy-gauge aerospace aluminum alloy for durability and accuracy, making them essential tools for carpenters, construction professionals, roofers, and DIYers alike. The included Blue Book provides additional guidance for using these professional Speed Squares effectively. Customers praise the durability, clarity of markings, and ease of use of these high-quality tools, making them a must-have for any project.

Versatile and Durable Construction Tool
  • Multiple Gradations for marking common, hip, valley, and jack rafters
  • Value pack includes 7 inch Speed Square and Big 12 Speed Square
  • Durable material – Heavy-gauge billet aluminum alloy construction
  • Easy to use as a saw guide for truing up boards
  • Made in the USA since 1925
  • Simplifies important tasks like ensuring square angles and marking 90 and 45 degrees
4

SWANSON S0101 7 Inch Speed Square

Amazon.com
9.6
Handy and sturdy
The SWANSON Tool Co S0101 7 Inch Speed Square is a versatile and durable tool made in the USA since 1925. It simplifies marking 90 and 45-degree angles with clear and deep markings, making it easy to use for accurate measurements. However, some areas may have rough finishing and the black markings may wear off quickly.
Advantages
  • Made in USA
  • Durable and long-lasting
  • Versatile and accurate measurements
  • Easy to use
  • Heavy-duty material
  • Clear and deep markings
  • Comes with instructional booklet
CONS
  • Roughly finished in non-essential areas
  • Black markings may wear off fast

The SWANSON Tool Co S0101 7 Inch Speed Square in Blue is a versatile and essential tool for carpenters, construction professionals, roofers, and DIY enthusiasts. With multiple gradations for marking common, hip, valley, and jack rafters, this Speed Square simplifies important tasks like determining angles and making square cuts on boards. Made in the USA since 1925, it features pocket-sized Swanson Blue Book for easy reference, and its durable steel material ensures accuracy and longevity. Whether you need to square something up, find roof pitches, or guide your circular saw, this Speed Square is a must-have for every project and job. Highly recommended by users for its durability, ease of use, and accuracy, the SWANSON Tool Co S0101 7 Inch Speed Square is a classic and reliable tool that belongs on every tradesman’s tool bench.

Precision Measuring Tool for Carpentry
  • Multiple gradations for marking common, hip, valley, and jack rafters
  • Pocket-sized Swanson Blue Book included for correct angle cuts
  • Combines features of 5 different tools (Try Square, Miter Square, Saw Guide, Line Scriber, Protractor)
  • 1/4-Inch spaced scribing notches and diamond cutout for easy rafter seat cuts
  • Made in USA since 1925
  • Simplifies marking 90 and 45 degrees
5

Mr. Pen Metal 7" Rafter Square, 2-Pack

Amazon.com
9.1
Great value addition
The Mr. Pen Metal 7 Inches Rafter Square, Carpenter Square, 2 Pack is a lightweight and user-friendly set of tools perfect for roofers, builders, and carpenters. With superb quality and diverse functionality for various projects, this is a great value addition to your toolbox.
Advantages
  • Lightweight and user friendly
  • Great all around tool
  • Nice triangles…good value
  • Quality -> Superb
  • Good tool to have in the drawer
CONS
  • Lightweight tool
  • Middle-of-the-road quality

The Mr. Pen Metal 7-Inch Rafter Square, a set of two, provides a versatile and durable solution for marking square and 45-degree lines, finding roof pitch, and more. Made from rust-proof aluminum alloy, this multi-purpose tool boasts precise graduation perfect for roofers, builders, and carpenters. Reviews note the square’s great value for occasional use, lightweight design, and functionality for woodworking needs. Easy to use, accurate, and convenient, it’s a must-have tool for your toolbox.

Precision Engineering for Accuracy
  • Set of 2 rafter squares (7 inches)
  • Made from rust-proof and weather-resistant aluminum alloy
  • Multi-purpose square tool for marking square and 45-degree lines, protractor saw guide, finding roof pitch, etc
  • Precise and plain graduation
  • Perfect for roofers, builders, and carpenters

Speed Square FAQ

How do you use a speed square to make a straight cut?

To use a speed square to make a straight cut, follow these steps:

  1. Place the speed square on the material you want to cut.
  2. Adjust the square so the lip sits against the edge of the material.
  3. Hold the square firmly in place.
  4. Use a pencil to mark along the edge of the square, creating a straight line.
  5. Cut along the marked line using a saw or other cutting tool, keeping the tool against the edge of the square for a precise straight cut.
What is a speed square used for?

A speed square is a versatile tool used primarily in carpentry for marking angles and making straight cuts on lumber. It can also be used as a saw guide and for measuring and defining angles accurately. Its design allows for quick and precise measurements, making it a handy tool for various construction and DIY projects.

What are the different markings and measurements on a speed square?

A speed square usually has markings for common angles such as 90 degrees, 45 degrees, and 30/60 degrees. It also features measurements on its long edge for marking and measuring lengths, while the short edge can be used for making quick, straight cuts. Some speed squares may have additional markings for rafter cuts, degrees, and degree conversion tables to help with complex angle measurements. These features make a speed square a versatile and handy tool for various carpentry and construction projects.

What materials are speed squares typically made from?

Speed squares are typically made from durable materials such as aluminum, steel, or high-impact plastic. These materials help ensure that the speed square is strong and can withstand the rigors of construction work while maintaining accurate measurements.

Who invented the speed square?

Joseph Johnson is credited with inventing the speed square. He developed this versatile tool in the early 1920s. The speed square is commonly used by carpenters and DIY enthusiasts for marking angles and making square cuts. It has become a staple in many toolboxes due to its efficiency and accuracy in various carpentry tasks.

Can a speed square be used to find angles?

Yes, a speed square can be used to find angles. Speed squares typically have a protractor built in, allowing you to accurately measure and mark angles for various woodworking and construction projects. The lip of the square can also be used as a guide for making straight cuts. It is a versatile tool that can help you with angle measurements and layout tasks.

Can a speed square be used in woodworking projects?

Yes, a speed square can definitely be used in woodworking projects. Originally designed for framing, a speed square is a versatile tool that can aid in measuring, marking angles, and making quick and accurate cuts. Its features, such as the lip for marking straight edges and the degree markings for angles, make it a handy tool in woodworking. So, feel free to incorporate a speed square into your woodworking projects for precise and efficient results.

Disclaimer: As an Amazon associate I earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.

Eky Barradas
Eky Barradas

Eky Barradas is an experienced industrial tools expert and DIY enthusiast with over 15 years in the industry. As a contributor to EngiMarket, he provides detailed and honest reviews to assist both professionals and hobbyists in selecting the best equipment. His goal is to foster a community of informed and empowered tool users through his insightful content on EngiMarket.

6 Comments
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  1. I would suggest adding the Stanley 46-053 Premium Adjustable Quick Square to this list. It’s a versatile tool that offers accurate measurements and durability for various projects.

  2. I’ve been using the SWANSON SW1201K Value Pack Speed Squares for a while now, and they have not disappointed. Great value for money and very reliable for precision work.

  3. I wish there were more options for stainless steel speed squares in this list. Any suggestions for high-quality stainless steel models?

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