---
product_id: 5146435
title: "Steel Combination Square with Square Head, 12\" Blade Length | Cast Iron Heads, Reversible Lock Bolt, Scriber, Spirit Level, 4R Graduation Type, 11H-12-4R"
brand: "starrett"
price: "NT$9293"
currency: TWD
in_stock: true
reviews_count: 13
category: "Starrett"
url: https://www.desertcart.tw/products/5146435-steel-combination-square-with-square-head-12-blade-length-cast
store_origin: TW
region: Taiwan
---

# 12-inch hardened steel blade 4R graduation with 1/64" precision Durable alloy steel & cast iron head Steel Combination Square with Square Head, 12" Blade Length | Cast Iron Heads, Reversible Lock Bolt, Scriber, Spirit Level, 4R Graduation Type, 11H-12-4R

**Brand:** starrett
**Price:** NT$9293
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your craft with precision that lasts a lifetime!

## Quick Answers

- **What is this?** Steel Combination Square with Square Head, 12" Blade Length | Cast Iron Heads, Reversible Lock Bolt, Scriber, Spirit Level, 4R Graduation Type, 11H-12-4R by starrett
- **How much does it cost?** NT$9293 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/5146435-steel-combination-square-with-square-head-12-blade-length-cast)

## Best For

- starrett enthusiasts

## Why This Product

- Trusted starrett brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Outlast:** Crafted from hardened alloy steel and cast iron to endure the toughest job sites.
- • **Multi-Tool Mastery:** Versatile square head for scribing, tri-squaring, mitering, depth & height gauging.
- • **Lifetime Investment:** Trusted by pros and DIYers alike — one tool you’ll never need to replace.
- • **Precision Perfected:** 4R graduations down to 1/64" for ultra-accurate measurements every time.
- • **Lock & Load Stability:** Reversible lock bolt ensures the ruler stays rock solid during critical measurements.

## Overview

The Starrett Steel Combination Square features a 12-inch hardened steel blade with 4R graduations offering precision down to 1/64 inch. Built with durable alloy steel and a cast iron square head, it withstands harsh environments and heavy use. Its versatile design supports multiple layout tasks including scribing, tri-squaring, and depth gauging. Equipped with a reversible lock bolt for stable measurements, this tool is a professional-grade investment favored by tradespeople and serious DIYers.

## Description

Starrett Steel Combination Square with Square Head, 12" Blade Length | Cast Iron Heads, Reversible Lock Bolt, Scriber, Spirit Level, 4R Graduation Type, 11H-12-4R: Carpentry Squares: desertcart.com: Tools & Home Improvement

Review: A very solid combination square. Worth the money. - This combination square is great. I am all about saving money on tools any time I can. Gauges and measuring equipment though are one of those areas where the money spent is worth it for a lifetime. This square is right on point and I can count on it for precision 45 degree and 90 degree checks and marks. I am glad I went with the starret model. It costs more but is worth it in the long run. The faces were machined perfectly flat on the square I received and all of the degree measurements check out on several accurate protractors. It feels solid while being used and the ruler doe not move at all when the nut is tightened. I could not ask for more from a combo square. Dimensions can be seen in the photos I have attached. One side has 1/32" graduations. Included in the box will be a certification from the factory. Pros: *Very precise *Well built *Sturdy Cons: *None Additional Considerations: When it comes to gauges. Spend the money. Its worth it in the long run. Overall: 5/5 stars (>=.5 rounds up,  5 stars If you have any further questions regarding the product in my review please leave a comment below and I will get back to you as soon as possible.
Review: Quality doesn't get any better than this. - Its a Starrett... how could it get less than fives stars? Well maybe because its expensive but. You will only have to buy one of these your entire life and pass it on when you go. Im a steel fitter and this one of my most used tools. I have went through many cheap combo squares. I deal with a lot of torch cut plate that has slag and rust along the edges. It tears reg squares up and makes it hard for them to slide. It doesn't phase this one at all. Quality doesn't get any better than this.

## Features

- Designed for Precision - The ruler has a 4R graduation type with 8ths, 16ths, quick reading 32nds, and 64ths that greatly increase the accuracy of your measurements.
- Built to Last - Able to withstand even the harshest environments as our combination squares are designed to last a lifetime. They are very reliable and perfect for any project you take on.
- Variety of Uses - The square head can be used for a variety of purposes such as scribing right angles and parallel lines, measuring, tri-squaring, mitering, depth gauging, height gauging, and levelling.
- Quality Made - The blade is made of hardened steel, offering exceptional durability and resistance to wear, rough usage, high-impact pressure, and shock.
- Versatile Layout Tool - Starrett squares are offered in a practical variety of styles to suit the needs of the individual, whether it be a toolmaker, mechanic, carpenter, or a "do-it-yourself" homeowner.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002CSBNO |
| Best Sellers Rank | #38,296 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #39 in Carpentry Squares |
| Brand | Starrett |
| Brand Name | Starrett |
| Color | Multicolor |
| Customer Reviews | 4.7 out of 5 stars 457 Reviews |
| Global Trade Identification Number | 00049659500554, 00094705119709 |
| Graduation Range | 1/64 inches |
| Item Dimensions L x W | 12"L x 1"W |
| Item Weight | 1.2 pounds |
| Manufacturer | Starrett |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model | 11H-12-4R |
| Number of Items | 1 |
| Part Number | 11H-12-4R |
| Product Dimensions | 12"L x 1"W |
| Style | 4R Graduation Type |
| Style Name | 4R Graduation Type |
| UPC | 094705119709 049659500554 |
| Unit Count | 1 Count |
| Warranty Description | One Year on defects in material and workmanship |

## Product Details

- **Brand:** Starrett
- **Color:** Multicolor
- **Graduation Range:** 1/64 Inches
- **Material:** Alloy Steel
- **Style:** 4R Graduation Type

## Images

![Steel Combination Square with Square Head, 12" Blade Length | Cast Iron Heads, Reversible Lock Bolt, Scriber, Spirit Level, 4R Graduation Type, 11H-12-4R - Image 1](https://m.media-amazon.com/images/I/61tHgdkq+PL.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A very solid combination square. Worth the money.
*by T***Y on June 14, 2016*

This combination square is great. I am all about saving money on tools any time I can. Gauges and measuring equipment though are one of those areas where the money spent is worth it for a lifetime. This square is right on point and I can count on it for precision 45 degree and 90 degree checks and marks. I am glad I went with the starret model. It costs more but is worth it in the long run. The faces were machined perfectly flat on the square I received and all of the degree measurements check out on several accurate protractors. It feels solid while being used and the ruler doe not move at all when the nut is tightened. I could not ask for more from a combo square. Dimensions can be seen in the photos I have attached. One side has 1/32" graduations. Included in the box will be a certification from the factory. Pros: *Very precise *Well built *Sturdy Cons: *None Additional Considerations: When it comes to gauges. Spend the money. Its worth it in the long run. Overall: 5/5 stars (>=.5 rounds up, <.5 rounds down) => 5 stars If you have any further questions regarding the product in my review please leave a comment below and I will get back to you as soon as possible.

### ⭐⭐⭐⭐⭐ Quality doesn't get any better than this.
*by S***. on April 11, 2026*

Its a Starrett... how could it get less than fives stars? Well maybe because its expensive but. You will only have to buy one of these your entire life and pass it on when you go. Im a steel fitter and this one of my most used tools. I have went through many cheap combo squares. I deal with a lot of torch cut plate that has slag and rust along the edges. It tears reg squares up and makes it hard for them to slide. It doesn't phase this one at all. Quality doesn't get any better than this.

### ⭐⭐⭐⭐⭐ Quality, accurate, beautiful
*by C***T on December 24, 2013*

If you all you work with is 2x material and plywood, then pick up a speed square at your local hardware store...if you want to build quality furniture or heirloom pieces, then this is what you want. If all you have ever held were the combination squares that you can find on the rack at your local hardware store, then you are in for a treat if you are able to wrap your fingers around a Starrett. First thing you will notice is the weight, not only is the cast Iron head heftier than the cheap aluminum or zinc in the typical 10 dollar square, the blade is heftier as well. The fit and finish are top notch, from the hardened awl to the etching on the blade. The most important thing however is that you know that this will be 100% accurate and square to 90`. (you can easily google how to check your square for square, i.e. 2 parallel line test) and it will stay that way. Also, made in the USA. My only wish was that I got the hardened steel head instead of the cast iron (I have a 6 inch square with the steel head) as it has better rust resistance. Also, make sure you get the satin blade, not the polished, much easier to read...this one has the satin blade.

## Frequently Bought Together

- Starrett Steel Combination Square with Square Head - 12" Blade Length, Cast Iron Heads, Reversible Lock Bolt, Scriber, Spirit Level, 4R Graduation Type - 11H-12-4R
- Starrett 6-Inch Spring-Tempered Steel Rule with Inch Graduations - Ideal for Metalworking and Engineering - Satin Chrome Finish, 4R Graduations, 3/64-Inch Thickness - C604RE-6

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-08-25*