--- product_id: 4566441 title: "Swanson Tool Co S0107 \"Big 12\" 12-Inch Speed Square Layout Tool with Blue Book" brand: "swanson tool co., inc" price: "186.87 DT" currency: TND in_stock: true reviews_count: 13 category: "Swanson Tool Co., Inc" url: https://www.desertcart.tn/products/4566441-swanson-tool-co-s0107-big-12-12-inch-speed-square store_origin: TN region: Tunisia --- # 12-inch heavy-gauge aluminum alloy 7 tools in 1: framing, miter, protractor & more Includes 62-page Blue Book for expert layouts Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book **Brand:** swanson tool co., inc **Price:** 186.87 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Master every angle with the Big 12 — your ultimate carpentry sidekick! ## Quick Answers - **What is this?** Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book by swanson tool co., inc - **How much does it cost?** 186.87 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/4566441-swanson-tool-co-s0107-big-12-12-inch-speed-square) ## Best For - swanson tool co., inc enthusiasts ## Why This Product - Trusted swanson tool co., inc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Expert Guidance On-the-Go:** Comes with the Swanson Blue Book, a pocket-sized 62-page manual packed with pro tips, diagrams, and tables for roofs and stairs. - • **Precision Meets Durability:** Crafted from heavy-gauge aluminum alloy with a matte finish to eliminate glare and ensure long-lasting accuracy. - • **Effortless Marking & Reading:** Features 1/4 in. and 1/2 in. spaced notches plus bold black gradations for quick, precise scribing and easy visibility. - • **Patented Layout Bar Included:** Quickly identify out-of-square corners and streamline your setup with the removable layout bar and hardware. - • **All-in-One Carpentry Powerhouse:** Combines seven essential tools in one compact design—speed up framing, stair building, and angle measurements effortlessly. ## Overview The Swanson Tool Co S0107 Big 12 is a 12-inch speed square made from heavy-gauge aluminum alloy, designed to combine seven essential carpentry tools into one. Featuring a patented layout bar and clear black gradations, it facilitates precise measurements and markings for framing, stairways, and roofing. Included is a 62-page Blue Book offering expert instructions and reference tables, making it a must-have for professionals seeking accuracy and efficiency on every project. ## Description Product Description The Big 12® is seven tools in one: a framing square, try square, miter square, protractor, saw guide, stair gauge and out-of-square corner angle finder. It’s constructed of heavy-gauge aluminum alloy and includes the Layout Bar for use in determining out-of-square corners. Also included are the Swanson® Blue Book for roof and stairway layout and Layout Bar with hardware. From the Manufacturer Swanson's Speed Square is a popular pocket sized square that incorporates features of the framing square, tri, mitre, and protractor squares. Common rafter and hip/valley rafter scales permit one-number references for all cuts. The square is merely rotated to the proper roof pitch value on either scale to assure the correct angle cut. The slot along the scales will accommodate an adjustable locking pin for repetitive cuts using any 1/4-inch bolt and nut. Comes with a handy, 62 page pocket sized booklet that provides vital instructions, reference diagrams, and tables for the construction of roofs and stairs. Review: Quality - Love the old world quality built into this. Also own the smaller Speed Squares of the same brand. Review: works good - Love it..nice for the money! ## Features - Heavy gauge aluminum alloy with matte finish to prevent glare - 1/4 in. and 1/2 in. spaced notches to facilitate scribing lines - Black gradations for easy reading - Patented layout bar - Great for deck framing and stairway building! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000056C0D | | Best Sellers Rank | #1,480 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Carpentry Squares | | Brand | Swanson Tool Co., Inc | | Brand Name | Swanson Tool Co., Inc | | Color | Silver | | Customer Reviews | 4.8 out of 5 stars 1,353 Reviews | | Global Trade Identification Number | 00038987001079 | | Graduation Range | 1/4 Inches | | Included Components | Swanson Tool S0107 12-Inch Speed Square Layout Tool with Blue Book | | Item Dimensions L x W | 12"L x 1"W | | Item Type Name | Swanson Tool S0107 12-Inch Speed Square Layout Tool with Blue Book | | Item Weight | 1.8 Pounds | | Manufacturer | Swanson Tool | | Material | Aluminum | | Material Type | Aluminum | | Model | S0107 | | Part Number | S0107 | | Product Dimensions | 12"L x 1"W | | Style | 12" Speed Square | | Style Name | 12" Speed Square | | UPC | 038987001086 077347299954 799360176806 636123624009 732233480563 732454028056 752913178207 640025018118 038987001079 343538195030 | | Unit Count | 3.2808 Feet | | Warranty Description | Manufacturer | ## Product Details - **Brand:** Swanson Tool Co., Inc - **Color:** Silver - **Graduation Range:** 1/4 Inches - **Material:** Aluminum - **Style:** 12" Speed Square ## Images ![Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book - Image 1](https://m.media-amazon.com/images/I/81HwFpGmsrL.jpg) ![Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book - Image 2](https://m.media-amazon.com/images/I/81VbdnD9QmL.jpg) ![Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book - Image 3](https://m.media-amazon.com/images/I/61v6VSzK7xL.jpg) ![Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book - Image 4](https://m.media-amazon.com/images/I/81OXsPdFJDL.jpg) ![Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book - Image 5](https://m.media-amazon.com/images/I/81oK+lKos0L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Where is this square made** A: Dont know but i personally think a framing square with stair guages works better, its kind of cheap quality **Q: I am not a pro, I just want to do some wood working around the house here and there. Will this tool benefit me more than the 7inch version?** A: I work as a carpenter and i have both the 7inch and a 12inch version.I carry The 7inch speed square with me all the time and use it a lot, the 12inch sqaure i keep in the toolbox because it's size makes it unpractical to carry with me and to be honest I rarly take it out and use it, maybe once or twice a month.So as for using at home I would go for the 7inch.If you occasionally need to make a longer marking then 7inch you can lay a straight board along the 90 degree side, then remove the square and make your marking. That works really well:)Hope this was useful for you!/Claes **Q: I just bought the 12" speed square, The slot that is supposed to hold the rise portion is way to large for the supplied 1/4" bolt? anyone else?** A: I just bought the same exact item from two different big box retailers. I bought and returned the first purchase because I assumed that the manufacturer had issued a recall on the item and the retailer had neglected to pull the existing stock from shelves. Because I was beginning a critical new stair job and I had chipped the pivot point on the 15 year old 12" speed square that I already owned, I bought another one from the second retailer. The product was defective from both retailers....and this is 10 months after your Sept. 2014 post.....apparently the problem has not been corrected by the manufacturer. **Q: “first time to buy and use the speed square. should i start off with 6in or the 12in? Beside their size, what other difference do they have”** A: I would suggest the 7" speed square. If you are going to be cutting a lot of 2x12's then the 12" would be handy in addition to the 7''. The 12" square comes with a layout bar for cutting stairs. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality *by O***E on April 9, 2026* Love the old world quality built into this. Also own the smaller Speed Squares of the same brand. ### ⭐⭐⭐⭐⭐ works good *by J***B on May 20, 2026* Love it..nice for the money! ### ⭐⭐⭐⭐⭐ great value for an inexpensive square that's square *by W***N on December 8, 2011* This is a duplicate of my review of the 7" Swanson speed square. They're both made of the same aluminum alloy, both equally sturdy, both use the same embossed lettering, etc. The only difference is the size and the fact that the 12" comes with a removable layout bar for faster setups. I recommend them both. This is a very good value for a low-end speed square. It's square! great for aligning power saw blades with tops and fences. This is not a precision cut tool, but it does what it's intended to do. I also have the 12" Swanson SO107 12-inch Speed Square, which is also inexpensive and useful. I have actually found the 12" to be more useful in my wordworking, especially with blade alignment, etc. Both come with a booklet that describes use for framing, stairs, rafters, etc. They are both made of thick 3/16" aluminum alloy and are very sturdy. The 7" is easier to carry around, but I use the 12" more for basic woodworking. Recommended ## Frequently Bought Together - Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book - Swanson Tool Co S0100 Pro Carpenters Construction Aluminium Speed Square - Johnson Level & Tool 405 Stair/Square Gauge Set – 2/Card, Brass Plated, 2 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/4566441-swanson-tool-co-s0107-big-12-12-inch-speed-square](https://www.desertcart.tn/products/4566441-swanson-tool-co-s0107-big-12-12-inch-speed-square) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-04*