---
product_id: 34119365
title: "Starrett Steel Combination Square with Square Head, 12\" Blade Length"
brand: "starrett"
price: "B/.510"
currency: PAB
in_stock: true
reviews_count: 13
category: "Starrett"
url: https://www.desertcart.com.pa/products/34119365-starrett-steel-combination-square-with-square-head-12-blade-length
store_origin: PA
region: Panama
---

# 12" hardened steel blade 4R graduations down to 1/64" cast iron square head Starrett Steel Combination Square with Square Head, 12" Blade Length

**Brand:** starrett
**Price:** B/.510
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Starrett Steel Combination Square with Square Head, 12" Blade Length by starrett
- **How much does it cost?** B/.510 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/34119365-starrett-steel-combination-square-with-square-head-12-blade-length)

## 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:** Durable cast iron head and hardened steel blade engineered for lifetime use.
- • **Shop-Ready Finish:** Satin chrome finish enhances readability and resists wear in demanding environments.
- • **Versatile Mastery:** Multi-functional tool for scribing, tri-squaring, mitering, depth & height gauging.
- • **Precision Perfected:** 4R graduation scale with 1/64" increments for ultra-fine measurements.
- • **Effortless Adjustments:** Reversible lock bolt ensures smooth, slop-free blade positioning every time.

## Overview

The Starrett Steel Combination Square features a 12-inch hardened steel blade with ultra-precise 4R graduations down to 1/64", paired with a rugged cast iron head. Designed for professionals and serious DIYers, it offers smooth, slop-free adjustments via a reversible lock bolt and a satin chrome finish for easy reading. This versatile layout tool excels in measuring, marking, and gauging tasks, built to withstand harsh workshop conditions and deliver lifetime reliability.

## Description

Starrett Steel Combination Square with Square Head, 12" Blade Length | Cast Iron Head, Hardened Steel, Reversible Lock Bolt, Scriber, 4R Graduation Type, C11H-12-4R - Carpentry Squares - desertcart.com

Review: but have a fair amount of slop to them and can be frustrating to set to very fine marks. Now that I finally made the jump ... - I've been looking at this combination square for a long time. I have used 2 old Stanley models I inherited from my grandfather as well as a newer Stanley my kids gave me a few years ago. They work, but have a fair amount of slop to them and can be frustrating to set to very fine marks. Now that I finally made the jump to the Starrett I have asked myself why I waited so long. Yes, it's not cheap, but the quality and precision are remarkable. It's very easy to make fine adjustments, there is no slop and the satin finish make it easy to see the measurement marks. I use my combination squares for machine setups and marking joinery on pieces I build. I invested in the 24" blade to go along with this as I often need to make marks between 12-24". It swaps out easily with the 12" blade. A great tool for measuring and marking in the shop.
Review: It was time to upgrade.... - Finally upgraded to the Starett from my (6th) budget, big box store combination square. I grew progressively more and more frustrated with the failing spring tension mechanisms that hold the blades in place. If I took the blade out to reconfigure for a particular task, I'd spend a good minute trying to get the blade back in. Not with the Starett. Everything runs smooth and precise. The machining and finish is excellent. Durable cast-iron head and hardeded still blade with a beautiful satin chrome finish. This will be the LAST combination square purchased in my lifetime.

## 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 | B00C3J3G3E |
| Best Sellers Rank | #54,214 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #50 in Carpentry Squares |
| Brand | Starrett |
| Brand Name | Starrett |
| Color | Black |
| Customer Reviews | 4.8 out of 5 stars 579 Reviews |
| Global Trade Identification Number | 00049659563665 |
| Graduation Range | 1/64 inches |
| Item Dimensions L x W | 12.7"L x 6.65"W |
| Item Highlight | Cast Iron Head, Hardened Steel, Reversible Lock Bolt, Scriber, 4R Graduation Type, C11H-12-4R |
| Item Weight | 1.2 pounds |
| Manufacturer | Starrett |
| Material | Steel, Iron |
| Material Type | Steel,Iron |
| Model | C11H-12-4R |
| Number of Items | 1 |
| Part Number | C11H-12-4R |
| Product Dimensions | 12.7"L x 6.65"W |
| Style | 4R Graduation Type |
| Style Name | 4R Graduation Type |
| UPC | 049659563665 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Starrett
- **Color:** Black
- **Graduation Range:** 1/64 inches
- **Material:** Steel,Iron
- **Style:** 4R Graduation Type

## Images

![Starrett Steel Combination Square with Square Head, 12" Blade Length - Image 1](https://m.media-amazon.com/images/I/41rror4pUlL.jpg)
![Starrett Steel Combination Square with Square Head, 12" Blade Length - Image 2](https://m.media-amazon.com/images/I/61oakYhRxNL.jpg)
![Starrett Steel Combination Square with Square Head, 12" Blade Length - Image 3](https://m.media-amazon.com/images/I/61GQTh6dbJL.jpg)
![Starrett Steel Combination Square with Square Head, 12" Blade Length - Image 4](https://m.media-amazon.com/images/I/61e+QrIfQgL.jpg)
![Starrett Steel Combination Square with Square Head, 12" Blade Length - Image 5](https://m.media-amazon.com/images/I/61P4atqnQAL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this combination square as accurate as a less expensive fixed square? I get that it is versatile, but is a riveted square more accurate?**
A: I have 5 of these type adjustalle squares...4 of them I have accumulated over many years. None of the old ones are perfect in every way....either they aren't absolutely perfectly square or the bubble level is off. I got tired of that crap quality so finally bit the bullet and got the Starrett knowing if it wasn't flawless I could return it. It is absolutely flawless. The more demanding test is to take a marking knife and scribe a line on a panel, flip the square over and insert the tip of the marking knife in the previous line. Now scribe a line on top and compare. The Starrett was perfect at 90 degrees and 45 degrees. And the bubble level agreed with my very expensive machinists digital level. Only con....it is expensive but worth it if you value accuracy.

**Q: Does it come with a starrett box?**
A: It comes in a box with the starrett logo on it...if you're asking if it comes with a protective case then no.

**Q: Any issues with rust on this square?  I live in FL, so the humidity really takes a toll on my tools.**
A: I live on the coast of northern CA. The humidity is probably not quite as brutal as FL, but in the few months I’ve had this square, I see no rust haze. Though I’ve yet to use it, camilla oil is good insurance.

**Q: Where is this manufactured? Thanks!**
A: I googled it and it's made in Massachusetts.

## Customer Reviews

### ⭐⭐⭐⭐⭐ but have a fair amount of slop to them and can be frustrating to set to very fine marks. Now that I finally made the jump ...
*by S***H on February 21, 2018*

I've been looking at this combination square for a long time. I have used 2 old Stanley models I inherited from my grandfather as well as a newer Stanley my kids gave me a few years ago. They work, but have a fair amount of slop to them and can be frustrating to set to very fine marks. Now that I finally made the jump to the Starrett I have asked myself why I waited so long. Yes, it's not cheap, but the quality and precision are remarkable. It's very easy to make fine adjustments, there is no slop and the satin finish make it easy to see the measurement marks. I use my combination squares for machine setups and marking joinery on pieces I build. I invested in the 24" blade to go along with this as I often need to make marks between 12-24". It swaps out easily with the 12" blade. A great tool for measuring and marking in the shop.

### ⭐⭐⭐⭐⭐ It was time to upgrade....
*by B***H on November 3, 2023*

Finally upgraded to the Starett from my (6th) budget, big box store combination square. I grew progressively more and more frustrated with the failing spring tension mechanisms that hold the blades in place. If I took the blade out to reconfigure for a particular task, I'd spend a good minute trying to get the blade back in. Not with the Starett. Everything runs smooth and precise. The machining and finish is excellent. Durable cast-iron head and hardeded still blade with a beautiful satin chrome finish. This will be the LAST combination square purchased in my lifetime.

### ⭐⭐⭐⭐⭐ So this is what a great tool feels like
*by B***G on April 20, 2020*

After fighting with my Irwin combination square for years, I had finally had enough. The turn screw to tighten the ruler to the handle "worked", but as often as not I'd need a a pair of pliers to loosen the thing up again because it was stuck and couldn't be loosened by hand. Knowing I'm enough of a tight-wad that I'd never upgrade as long as the Irwin "worked", I cleverly smashed the thing with a hammer on the spot to free the ruler for the last time and commenced my search for a higher quality combination square. I never thought I'd use the term "smooth as butter" to describe a tool, but here we are. I will leave the in-depth stuff to the people who have left long reviews on this tool and apparently have forgotten more about combination squares than I will ever know. But I can tell you the turn screw to tighten the Starrett combination square down works with smooth precision and offers a satisfying grasp of the ruler that speaks of the quality my Irwin could only jealously dream of. I am happy to report it loosens with the same ease. My advice after years of sorrow and woe: buy the Starrett. Life is too precious to spend it carrying pliers around with your combination square.

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-09-22*