




- Mr. Pen rafter square comes as a 7-inch carpenter’s tool, ideal for marking angles, making square cuts, and guiding precise measurements.
- Built from solid aluminum, this square offers durability and rust resistance while remaining lightweight and easy to handle.
- The 7-inch size provides the perfect balance between portability and versatility for a wide range of carpentry, roofing, and framing tasks.
- Featuring easy-to-read laser-etched markings in contrasting yellow on a blue background, it ensures high visibility even in low-light conditions.
- Designed with a thick edge for use as a saw guide, it’s an essential tool for professionals and DIYers alike who demand accuracy and reliability.
Mr. Pen rafter square comes as a 7-inch carpenter’s tool, ideal for marking angles, making square cuts, and guiding precise measurements.
Built from solid aluminum, this square offers durability and rust resistance while remaining lightweight and easy to handle.
The 7-inch size provides the perfect balance between portability and versatility for a wide range of carpentry, roofing, and framing tasks.
Featuring easy-to-read laser-etched markings in contrasting yellow on a blue background, it ensures high visibility even in low-light conditions.
Designed with a thick edge for use as a saw guide, it’s an essential tool for professionals and DIYers alike who demand accuracy and reliability.
4 reviews for Mr. Pen- Rafter Square, 7 Inch, Blue, Aluminum Alloy Speed Square 7 Inch, Triangle Ruler for Roofing, Framing, Woodworking and Accurate Angle Layouts
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$5.85
Ryan –
Solid Aluminum Rafter Square That Is Accurate and Affordable
My previous rafter square was a plastic one that I had owned for years, and between the dings, wear, and layers of pencil and marker marks, it was time for an upgrade. I came across this Mr. Pen rafter square mainly because of the low price and the fact that it is made from metal, and I am glad I picked it up.The square arrived in simple packaging, but the tool itself is solid and well made. It is full size, made from aluminum, and has a good weight to it without feeling heavy. All of the edges are clean, and the markings are deep, clear, and easy to read, even at a glance. Transferring measurements to wood with a pencil is straightforward, and the square sits flat and stable when marking or guiding cuts.Accuracy was my main concern, and this square checks out. It appears true based on my other measuring tools, holds a clean ninety degree angle, and matches my tape measurements exactly. Compared to the old plastic square I was using, this feels far more durable and precise. For the price, it is impressive how much tool you get. I am officially retiring my old one and using this going forward. This is a precise, economical rafter square that is perfect for weekend DIY projects.
Michael –
They have more!
I love this one, I’m throwing the plastic ones in the trash, this one is tough, machined aluminum, the easy to read offset colors are awesome especially for colorblind, the price is amazing considering it’s so strong, the cheap plastic one cost more, absolutely the best value and I went to their site and was blown away by all the high end products from the drafting table to the hammer they got it, I like the personal note too, with a stash sticker!
Robert Steele –
Great price and quality
Perfect and exactly what I was looking for. I bought a house and use it ALL THE TIME. It’s a great price and even cheaper than a lot of other places. Good strong quality and great for any project you have
G. E. Graham –
good product and a great price
Mr. Pen provides good products and great prices and this square is no exception. This is a light weight aluminum alloy square that is clearly marked and easy to use. I like it.