---
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: "$U2367"
currency: UYU
in_stock: true
reviews_count: 8
category: "Swanson Tool Co., Inc"
url: https://www.desertcart.uy/products/4566441-swanson-tool-co-s0107-big-12-12-inch-speed-square
store_origin: UY
region: Uruguay
---

# 7-in-1 multi-tool precision Includes expert Blue Book guide Heavy-gauge aluminum alloy Swanson Tool Co S0107 "Big 12" 12-Inch Speed Square Layout Tool with Blue Book

**Brand:** swanson tool co., inc
**Price:** $U2367
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your craft with the Big 12 — precision that professionals swear by!

## 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?** $U2367 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/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

- • **Easy-to-Read Black Gradations:** Clear markings for flawless measurements every time.
- • **Bonus Swanson Blue Book Included:** Expert roof and stair layout guidance in your pocket.
- • **Master Every Angle with 7 Tools in One:** Framing, miter, protractor, and more—your all-in-one precision partner.
- • **Durable Aluminum Alloy with Matte Finish:** Glare-free, sturdy design built to last through every project.
- • **Patented Layout Bar for Out-of-Square Corners:** Pinpoint accuracy when it matters most on decks and stairs.

## Overview

The Swanson Tool Co S0107 Big 12 is a 12-inch speed square crafted from heavy-gauge aluminum alloy with a matte finish to prevent glare. Combining seven essential tools in one—framing, try, miter, protractor squares, saw guide, stair gauge, and out-of-square corner finder—it offers unmatched versatility. Featuring black gradations for easy reading, a patented layout bar, and including the Swanson Blue Book for expert roof and stairway layouts, this tool is a must-have for carpenters and DIY pros seeking precision and durability.

## 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: Makes My Measurements Look Professional - Solid, accurate, and does not bend or feel flimsy. This speed square made my DIY projects look way more legit than my skill level probably deserves. Easy to read markings and comfortable to use — no guessing, no eyeballing, no regret.
Review: Full function speed square - Exactly like it’s big brother but small enough to fit in an apron. I checked it for square and 45 degrees and it right on the money. Weighs practically nothing because of its aluminum construction and clear markings. Excellent value and perfectly square. I can stop looking for squares now since I have four different sizes up to 18”.

## 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 |
|---------------|-------|
| Best Sellers Rank | #1,946 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Carpentry Squares |
| Brand | Swanson Tool Co., Inc |
| Color | Silver |
| Customer Reviews | 4.8 out of 5 stars 23,113 Reviews |
| Graduation Range | 1/4 Inches |
| Material | Aluminum |
| Product Dimensions | 12"L x 1"W |
| Style | 12" Speed Square |

## 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/51krGziF7yS.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

### ⭐⭐⭐⭐⭐ Makes My Measurements Look Professional
*by M***A on December 20, 2025*

Solid, accurate, and does not bend or feel flimsy. This speed square made my DIY projects look way more legit than my skill level probably deserves. Easy to read markings and comfortable to use — no guessing, no eyeballing, no regret.

### ⭐⭐⭐⭐⭐ Full function speed square
*by D***D on September 20, 2025*

Exactly like it’s big brother but small enough to fit in an apron. I checked it for square and 45 degrees and it right on the money. Weighs practically nothing because of its aluminum construction and clear markings. Excellent value and perfectly square. I can stop looking for squares now since I have four different sizes up to 18”.

### ⭐⭐⭐⭐⭐ Swanson Speed Square
*by M***Z on October 28, 2025*

The Swanson speed square is an amazing tool, and a must have in your tool inventory. I use it for all of my DIY projects, that involves carpentry. The tool is of excellent quality that's built to last. Highly recommended!!!Two thumbs up. 👍 👍

## 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

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-04*