SWANSON Tool Co S0101 7 Inch Speed Square, Blue

I like this speed square and use it each time I am measuring for a cut. It is a quality tool that will last for ever. It is very easy to use and the included book is helpful.

I've owned several speed squares over the years (cheap knockoffs, bigger 12" versions, even some plastic ones), but the Swanson Tool Co. S0101 7 Inch Speed Square (Blue) is still the gold standard — it's the one I reach for almost every single time I need accurate, quick measurements on the jobsite or in my garage. After years of daily use, it's become one of those tools that feels indispensable. Build quality — built like a tank. Made of heavy-gauge aerospace aluminum alloy with a durable blue matte finish. It's tough — won't bend, warp, or rust even after getting banged around in a toolbox, dropped on concrete, or left outside in light weather. The black-filled gradations are sharp and easy to read against the blue background, no fading or wearing off. The edges are crisp for clean scribing, and the lip (heel) is perfectly square for reliable 90° marks. Features & versatility — does way more than a basic square. 7-inch size — compact enough to fit in a pocket or tool pouch, but large enough for most framing, roofing, and layout tasks. Built-in features of a framing square, tri-square, miter square, and protractor. Graduations for common, hip, valley, and jack rafters — perfect for roof pitches and angle cuts. Scribe notches for easy pencil marking. Degree scale for quick angle measurements. Comes with the famous pocket-sized Swanson Blue Book — a mini guide packed with rafter tables, conversion charts, and how-to info for roof framing. Super handy reference right on the tool. What I use it for Marking 90° cuts on lumber Checking square on frames, cabinets, decks Laying out stair stringers and roof rafters Finding angles for trim, brackets, or miter cuts Quick squaring of sheet goods or drywall As a saw guide for circular saws (the lip hooks over the board edge perfectly) Even basic measuring and scribing in tight spaces It's incredibly accurate out of the box — no need to calibrate or second-guess it. The combo of size, durability, and all-in-one functionality makes it perfect for carpenters, woodworkers, DIY homeowners, roofers, remodelers — anyone who builds or fixes things. Value is unbeatable. Usually around $10–15 (often on sale), and it lasts forever. With over 16,000+ reviews averaging around 4.8 stars, it's consistently one of the highest-rated and best-selling carpentry squares on Amazon for good reason. No gimmicks, no plastic parts that break — just a reliable, professional-grade tool at a homeowner price. If you're starting a tool collection, upgrading from a basic combo square, or just want the classic speed square that pros swear by, this Swanson S0101 is the one. It's earned a permanent spot in every tool belt I've owned. Zero complaints — highly recommend! 5 stars all day.

Lost it at some point but it was a cool new tool when I needed to build a chicken run. Hopefully I can find it before then next project. Sturdy and accurate measurement markings, easy to use once you get the hang of it.

Very nice quality square. Easy to read. Will put this to good use. Also came with an instruction book for those of us who only know how to use it as a ruler, rip guide or square edges. I’ll be reading this to finally learn how to fully use a speed square.

I'm always trying to increase my knowledge of building and carpentry and recently decided to incorporate a rafter (with bird'smouth) design into my window awning project. The Swanson square was perfect for the job and with the book it came with I was able to learn the "One-Number" rule that makes it real simple to build your roof rafters. I'd advise all first timers to do it on a smaller project--such as dog house or small shed--before a home's roof. I'm not a natural numbers guy so only read the book in a few parts, watched a quick video on the Swanson square and then went to work. I went through three sets of 2x4 rafters templates until I got the angle just right for the rafter to sit up against the ledger against the wall and the birdsmouth to land on the lower 'sill plate' that would support the window awning. I think my "ONE" number for pitch was 9 (I was using degrees{36}) and from that number you can essentially build a real roof. It came out great and from this one project I''m pretty sure I can build a real roof for any structure I design at this point. If you know your 'one' number prior to building a new project but we didn't because of other concerns such as making the awning tall enough for my clients to walk under while slope had to be steep enough to provide sufficient shade to window. As a result, my assistant and I had to test angle cuts (and then hold them up against the framing structure) until we got the approximation of 36 degree-which makes all the rafters plumb cuts. Then using the square we got the pitch of 9. More importantly, you can use a simple formula to find the distance for your birdsmouth (where your 'seat' and 'heel' cuts meet the outer edge of your bulding/sill plate). Prior to this project I only used my squares for 90degree cuts. Now, it's opened up a whole world of building possibilities. Thanks for the book, Swanson.

It's that need for me. This tool is absolutely worth the money. The build quality feels solid, and it’s very easy to handle even for longer projects. It has become indispensable for working with wood, but it’s also versatile enough for other tasks around the workshop. A great balance of price, functionality, and durability — I’m very satisfied with this purchase. Fit me, light.

this square is very well made, and a good buy.

First time using the SWANSON Tool Co S0101 7-inch Speed Square and I’m impressed. It feels solid in hand, not cheap at all, and the markings are clear and easy to read. I like how versatile it is for quick measurements, straight lines, and angles. Made my cuts more accurate right away. Lightweight but durable enough for regular use. Definitely a handy tool to keep in my setup and I’ll be using it a lot more going forward.

This is not a replacement for an adjustable combination square and is not suitable for fine work, but for its intended use in framing work it is brilliant. The pencil notches for marking lines parallel to the edge of a board are very useful when ripping wood and the protractor feature is surprisingly usable (though again, not really for marking off 3.25 degrees!) The wide base makes this convenient for checking joints for plumb as it will stand on its own quite securely; this base also makes a really solid rest for when you want to mark a cutting line at 90 degrees - it hooks over the edge of a standard CLS 2x X timber perfectly and gives a far more positive result than a standard combination square (the full length of the side of the square being in contact with the timber really helps here too.) I have not yet used the square for the purpose for which I bought it (laying out rafters for my current project) but hope to do so soon - the accompanying "blue book" seems fairly comprehensive and I'm confident this square will make my life a lot easier when the time comes. Overall the square is well made from nice thick metal and very nicely finished. My only criticism would be that the black paint applied to the markings wasn't particularly thorough; as the markings themselves are deeply recessed into the metal there is no issue in practice. Edit: I have since used it to make rafters and very much more and it was excellent. Once you've figured out the desired roof pitch it's so simple to get every cut at the right angle - not just for rafters but things like barge boards, sheathing, lining, interior trim etc. Worth every penny.

One of the best!!!

practica y util , resistente e indeformable , buen producto gracias

Davvero fantastica la famosa "Speed Square" della Swanson. Realizzata in alluminio, robusta e leggera. Ho preferito la versione originale da 7 pollici perché la versione in metrico decimale è più grande e leggermente diversa. Per quanto mi riguarda il fatto che sia in pollici non mi crea nessun problema. Non è una squadra per lavori di fino ma da carpenteria (utilizzata principalmente per la costruzione di tetti). come squadra di precisione utilizzo una combinata Starrett. Comodissima per mettere in quadro due pezzi, come guida per fare un taglio a 90° con la sega circolare a mano, per tenere fermo e bene in quadro un pezzo da tagliare con la troncatrice, per tracciare linee parallele lungo un'asse o una tavola... Con un filo a piombo si può anche usare come livella (appoggiando il lato lungo sul piano e facendo passare il filo sul "pivot point", il filo deve passare sulla linea dei 45°, e si è sicuri che il piano è livellato). Nella confezione è presente un libretto in inglese con tutte le spiegazioni tecniche per i suoi svariati utilizzi. Immancabile nel corredo di falegnami, carpentieri o feticisti dell'utensile :D

Bought this for my husband. Delivery was prompt and item was as expected. Hubby was so happy with the included blue book.