---
product_id: 13087290
title: "Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch"
brand: "swanson tool co., inc"
price: "10.69 OMR"
currency: OMR
in_stock: true
reviews_count: 13
category: "Swanson Tool Co., Inc"
url: https://www.desertcart.com.om/products/13087290-swanson-tool-co-inc-swanson-t0108-big-12-speed-square
store_origin: OM
region: Oman
---

# 12-inch heavy-gauge aerospace aluminum 60-page Swanson Blue Book included 7-in-1 multi-tool functionality Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch

**Brand:** swanson tool co., inc
**Price:** 10.69 OMR
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your craft with the pro’s choice — precision, durability, and know-how in one sleek square!

## Quick Answers

- **What is this?** Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch by swanson tool co., inc
- **How much does it cost?** 10.69 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/13087290-swanson-tool-co-inc-swanson-t0108-big-12-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

- • **Built to Endure:** Heavy-gauge aerospace aluminum with matte finish resists glare, bending, and rust for lasting reliability.
- • **Pro-Level Guidance:** Includes the iconic 60-page Swanson Blue Book — your pocket-sized expert for roof and stair layouts.
- • **Effortless Accuracy:** Plain gradations and scribing notches ensure flawless, professional-grade measurements every time.
- • **Ultimate 7-in-1 Precision:** Combines framing, miter, protractor, saw guide & more for all-in-one jobsite mastery.
- • **Trusted by Pros, Loved by DIYers:** Top-rated, USA-made tool with a 1-year warranty that elevates every project from basic to brilliant.

## Overview

The Swanson T0108 Big 12 Speed Square is a durable, 12-inch heavy-gauge aerospace aluminum layout tool that integrates seven essential carpentry functions into one. Featuring glare-resistant matte finish, precise plain gradations, and handy scribing notches, it ensures professional accuracy. Packaged with a 60-page Swanson Blue Book for expert guidance on roof and stair layouts, this USA-made tool is a top-rated favorite among professionals and DIY enthusiasts alike, backed by a 1-year limited warranty.

## Description

Product Description The Big 12 Speed Square Is A 12 In. Version Of The Swanson Speed Square. This Innovative Tool Combines 7 Tools Into 1: 1. Framing Square, 2. Try Square, 3. Miter Square, 4. Protractor, 5. Saw Guide, 6. Stair Gauge, & 7. Out-Of-Square Corner Angle Finder. The Big 12 Speed Square Is Die-Cast For Durability And Accuracy. Made Of Heavy-Gauge Aerospace Aluminum Alloy, It Is Built To Last. This Model Includes The Swanson Blue Book For Roof And Stairway Layout And Features Markings For Using The Swanson One-Number Method Of Rafter Layout. The Swanson Speed Square Is Our Most Popular Product And Remains The Most Trusted Square Of Its Kind. Look For The Diamond Cutout For Genuine Swanson Products. Note: This Item Does Not Include The Layout Bar Or Corresponding Hardware Used With The S0107 Big 12 Speed Square. desertcart.com The Swanson Big 12 Speed Square is made from heavy-gauge aluminum alloy with plain gradations and a matte finish to prevent glare. Individually packaged with a 60-page Swanson Blue Book of Instructions, this versatile 12 Speed Square is a framing square, try square, miter square, protractor, and saw guide, in one easy-to-use tool. This product also comes with a 1-year limited manufacturer's warranty. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer Big 12 Speed Square with Blue Book Instructions. Framing Square, Try Square, Miter Square, Protractor, Saw Guide See more

Review: The ultimate pocket-sized layout tool - 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 desertcart 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.
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.

## Features

- Heavy gauge aluminum with matte finish to prevent glare
- 1/4 in. and 1/2 in. spaced notches to facilitate scribing lines
- Plain gradations
- Includes 60-page Swanson blue book of instructions
- Great for deck framing and stairway building!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IOCJK2 |
| Batteries required | No |
| Best Sellers Rank | #1,709 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Carpentry Squares |
| Customer Reviews | 4.8 4.8 out of 5 stars (23,162) |
| Department | Unisex-Adult |
| Import | Made in the USA |
| Included Components | Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book |
| Is Discontinued By Manufacturer | No |
| Item Weight | 14.1 ounces |
| Item model number | T0108 |
| Manufacturer | Swanson Tool |
| Product Dimensions | 0.9 x 12.3 x 12.3 inches |
| Warranty Description | Swanson Tool Co., Inc. warrants its products to be free from defects in material and workmanship for 1 year from the date of the original purchase. Swanson's only liability under this limited warranty shall be at their option to repair or replace any product determined by Swanson to be defective. No damages or other remedies available. |

## Product Details

- **Brand:** Swanson Tool Co., Inc
- **Color:** Grey
- **Graduation Range:** 1/4 Inches
- **Material:** Plastic
- **Style:** Big 12 (plain)

## Images

![Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch - Image 1](https://m.media-amazon.com/images/I/811zYXy1CBL.jpg)
![Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch - Image 2](https://m.media-amazon.com/images/I/71B11-OGScL.jpg)
![Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch - Image 3](https://m.media-amazon.com/images/I/511JEkGm11L.jpg)
![Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch - Image 4](https://m.media-amazon.com/images/I/817+GB0OTyL.jpg)
![Swanson Tool Co., Inc Swanson T0108 Big 12 Speed Square Layout Tool with Blue Book, Plain gradations, 12-Inch - Image 5](https://m.media-amazon.com/images/I/51PGopG0eWL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The ultimate pocket-sized layout tool
*by K***. on February 5, 2026*

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.

### ⭐⭐⭐⭐⭐ 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”.

## Frequently Bought Together

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-25*