---
product_id: 12112458
title: "Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6\" Blade Length, 4R Graduation - 13C"
brand: "starrett"
price: "₩321295"
currency: KRW
in_stock: false
reviews_count: 8
url: https://www.desertcart.kr/products/12112458-starrett-steel-inch-reading-double-square-with-hardened-graduated-blade
store_origin: KR
region: South Korea
---

# 6" hardened graduated blade 4R quick-read graduations (8ths to 64ths) steel with satin chrome finish Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C

**Brand:** starrett
**Price:** ₩321295
**Availability:** ❌ Out of Stock

## Summary

> 📐 Own the tool that masters trust — precision meets durability in every inch.

## Quick Answers

- **What is this?** Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C by starrett
- **How much does it cost?** ₩321295 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/12112458-starrett-steel-inch-reading-double-square-with-hardened-graduated-blade)

## 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

- • **Precision that Pays Off:** 4R graduation enables ultra-accurate readings down to 1/64", eliminating guesswork on every project.
- • **Effortless Repeatability:** Sliding double square design locks firmly for quick, consistent measurements—perfect for repetitive tasks.
- • **Versatility for Every Maker:** Ideal for machinists, toolmakers, carpenters, and DIY pros who demand precision and reliability.
- • **Trusted Legacy of Excellence:** Starrett’s century-plus reputation means you’re investing in a tool that professionals swear by.
- • **Built to Outlast Your Toughest Jobs:** Crafted from hardened steel with satin chrome finish for unmatched durability and wear resistance.

## Overview

The Starrett Steel Inch Reading Double Square features a 6-inch hardened graduated blade with 4R graduations for precise measurements down to 1/64 inch. Made from durable steel with a satin chrome finish, this tool offers exceptional wear resistance and longevity. Its sliding double square design allows for quick, repeatable measurements, making it ideal for machinists, toolmakers, carpenters, and serious DIYers. Backed by Starrett’s legacy since 1880, it’s a professional-grade tool built to last a lifetime.

## Description

Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C - Carpentry Squares - desertcart.com

Review: Accurate, genuine and shiny - This is a beautiful, precision tool, and the first Starrett I've ever held. Many years ago I bought a Swiss made Tesa dial caliper and one of their micrometers after the original owner passed away. Those were my first introduction to precision tools, and they made a strong impression, how critical accuracy is and how affirming they are to use. For years I've been getting by with a low quality combination square and my Incra guaranteed square, but the former was cheap and the latter doesn't have any measuring marks. After reading the comments and studying the options, the choice to get a Starrett 6-inch Double Square was fairly easy. Like one fellow said, cry once but smile the rest of your life. All of the edges are perfect. It's as square as I can tell when holding it up to my Incra to check. If I get a chance to put it on a granite reference block, I'll update this. I was happy to find the blade is flat, and not a single burr anywhere. The movement is precise when the screw is loosened. It slides with exactness and no slop. It locks firmly without excessive torque on the screw. And there is almost no gap between the blade and the head. I am inclined to buy American tools that are the finest quality to help support my neighbors, and I was really happy I found the inspection certificate in the box, showing it was made in Althol, Mass. Here are some anecdotal measurements taken with a Mitutoyo 6" Digital Caliper and a Tesa 1" micrometer, where I'll note the error based on the certificate that came with it or the usual 1/2 the smallest increment. I wouldn't trust those with my life, but I do care for these tools as best I can. Blade Length: 5.9995 +/- 0.001" Blade Width: 1.0008 +/- 0.00025" Blade Thickness: 0.0814 +/- 0.00025" Head Length: 3.601 +/- 0.001" Head Width: 1.1845 +/- 0.001" Head Thickness: 0.5870 +/- 0.0025" Blade to Head gap: < 0.0025 (my smallest feeler gauge) I have one small regret. The only choice was the shiny blade that scratches easily and is harder to see under work lights than the stain chrome one, but I can still buy that separately. I give it 5 stars.
Review: Expensive and worth it - High quality. Expensive and worth it. This is a double square - meaning the blade can slide and be fastened as needed. It's already difficult to find a good square. It's amazing that they can make a double square, which stays square. Anyways, that's what you're paying for. I use this tool for my woodworking hobby. Being able to quickly move the head along the blade means I can lock in a specific measurement and easily make repeated measurements by holding pieces of wood to head's side. This seemingly simple ability shines in many areas. One example is using the planer to get to a finish dimension. All I need to do is first set final size on the double square. After each set through the planer, simply hold the double square to the piece and feel if the blade matches the thickness of the wood. Checking by feel is immediate. Not there yet? Send it through again. There? Stop and move on. So simple. The alternative is to painstakingly measure after each pass, straining your eyes and running the risk of forgetting or making a mistake. This quality tool is expensive. And it's worth it. It saves you time. That itself should sell you on it. It is also built to last. How long? I'm not sure =)

## Features

- Designed for Precision - Starrett Double square has a 4R graduation - Quick Reading 8ths, 16ths, 32nds, 64ths that greatly increase the accuracy of your measurements.
- Built to Last - Able to withstand even the harshest environments as our squares are designed to last a lifetime. They are very reliable and perfect for any project you take on.
- 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.
- Quality Made - The square is made from steel with satin chrome finish, offering exceptional durability and resistance to wear, rough usage, high-impact pressure, and shock.
- The Standard for Excellence - Manufacturing quality tools that provide consistent and reliable performance since 1880, Starrett's commitment to product excellence, has earned them a reputation as one of the most trusted names in the industry.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002CSBP2 |
| Best Sellers Rank | #482,539 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #554 in Carpentry Squares |
| Date First Available | November 9, 2004 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 9.3 ounces |
| Item model number | 13C |
| Manufacturer | Starrett |
| Product Dimensions | 1 x 0.7 x 6.6 inches |

## Product Details

- **Brand:** Starrett
- **Color:** Black
- **Graduation Range:** 1/64 Inches
- **Material:** Alloy Steel
- **Style:** Square

## Images

![Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C - Image 1](https://m.media-amazon.com/images/I/31HI2nkRsHL.jpg)
![Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C - Image 2](https://m.media-amazon.com/images/I/41lOOFN8tYL.jpg)
![Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C - Image 3](https://m.media-amazon.com/images/I/41wF1ud517L.jpg)
![Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C - Image 4](https://m.media-amazon.com/images/I/51FZlbfNmwL.jpg)
![Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C - Image 5](https://m.media-amazon.com/images/I/51HjyG4oRtL.jpg)

## Questions & Answers

**Q: Does this come with a Satin Chrome blade like the Starret website shows?**
A: The blade for the square on this site says it's the "regular finish," therefore not the satin chrome finish. I ordered three squares from different vendors before I received a square with the satin chrome blade. All three vendors claimed theirs were satin chrome. My square with the satin chrome blade came directly from the Starrett website. Order fulfillment was prompt, the price was favorable, and shipping was minimal. Plus, you will get what you really want. See my video comparison somewhere on this page.

**Q: Does it come with a case ?**
A: No, it just comes in the Starrett cardboard box packaging.

**Q: My square didn't include an inspection certificate. It has a notice about the blade differing from my original blade due to the finish. Counterfeit?**
A: Hey man I would send it back the quality of starrett is going downhill I got one new and it was 3/32 out of square. I would recommend looking into a vehicle or machinist swap meet for an old starrett, this is what i did and they are all 100% true and square. Hope this helps!

**Q: Is it appropriate to run a marking knife along the rule edge? Because it's a reference tool, is there a better Starrett for that?**
A: All of Starrett's measuring tools are the best out there.  I don't think one is better than the other.  It's just personal preference.  Nothing wrong with running your blade along the side.  That's how I do it.  Although I use an exacto knife with a razor blade.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Accurate, genuine and shiny
*by N***S on August 15, 2018*

This is a beautiful, precision tool, and the first Starrett I've ever held. Many years ago I bought a Swiss made Tesa dial caliper and one of their micrometers after the original owner passed away. Those were my first introduction to precision tools, and they made a strong impression, how critical accuracy is and how affirming they are to use. For years I've been getting by with a low quality combination square and my Incra guaranteed square, but the former was cheap and the latter doesn't have any measuring marks. After reading the comments and studying the options, the choice to get a Starrett 6-inch Double Square was fairly easy. Like one fellow said, cry once but smile the rest of your life. All of the edges are perfect. It's as square as I can tell when holding it up to my Incra to check. If I get a chance to put it on a granite reference block, I'll update this. I was happy to find the blade is flat, and not a single burr anywhere. The movement is precise when the screw is loosened. It slides with exactness and no slop. It locks firmly without excessive torque on the screw. And there is almost no gap between the blade and the head. I am inclined to buy American tools that are the finest quality to help support my neighbors, and I was really happy I found the inspection certificate in the box, showing it was made in Althol, Mass. Here are some anecdotal measurements taken with a Mitutoyo 6" Digital Caliper and a Tesa 1" micrometer, where I'll note the error based on the certificate that came with it or the usual 1/2 the smallest increment. I wouldn't trust those with my life, but I do care for these tools as best I can. Blade Length: 5.9995 +/- 0.001" Blade Width: 1.0008 +/- 0.00025" Blade Thickness: 0.0814 +/- 0.00025" Head Length: 3.601 +/- 0.001" Head Width: 1.1845 +/- 0.001" Head Thickness: 0.5870 +/- 0.0025" Blade to Head gap: < 0.0025 (my smallest feeler gauge) I have one small regret. The only choice was the shiny blade that scratches easily and is harder to see under work lights than the stain chrome one, but I can still buy that separately. I give it 5 stars.

### ⭐⭐⭐⭐⭐ Expensive and worth it
*by A***T on April 19, 2017*

High quality. Expensive and worth it. This is a double square - meaning the blade can slide and be fastened as needed. It's already difficult to find a good square. It's amazing that they can make a double square, which stays square. Anyways, that's what you're paying for. I use this tool for my woodworking hobby. Being able to quickly move the head along the blade means I can lock in a specific measurement and easily make repeated measurements by holding pieces of wood to head's side. This seemingly simple ability shines in many areas. One example is using the planer to get to a finish dimension. All I need to do is first set final size on the double square. After each set through the planer, simply hold the double square to the piece and feel if the blade matches the thickness of the wood. Checking by feel is immediate. Not there yet? Send it through again. There? Stop and move on. So simple. The alternative is to painstakingly measure after each pass, straining your eyes and running the risk of forgetting or making a mistake. This quality tool is expensive. And it's worth it. It saves you time. That itself should sell you on it. It is also built to last. How long? I'm not sure =)

### ⭐⭐⭐⭐⭐ High quality at a premium price. Totally worth it.
*by J***D on May 26, 2014*

This is my second Starrett square (I also own the larger 12-inch square with the 45 degree angle). I bought this to replace a small Crown tools try square that was, well, not at all square. I actually used that tool for a long time before I finally realized it wasn't true when I edge jointed a thick board by hand. That'll teach me to thoroughly check out stuff that I buy before use! Since there's no adjustment possible, that tool is now a brass and rosewood paperweight... Anyway, the Starrett is an excellent tool. It's perfectly square, at least to the limits of my ability to measure (by drawing a fine line perpendicular to a straight edge and flipping the square over to look for parallel). Adjustment is smooth. It's a good replacement for a fixed engineer's style square, and certainly accurate enough for woodworking. It's pricey, but you get a top-quality American tool, obviously made by people who care, that will last forever. That's a heck of a lot better than buying cheap junk that will ruin your work and be discarded.

## Frequently Bought Together

- Starrett Steel Inch Reading Double Square with Hardened Graduated Blade - Ideal for Machinists, Toolmakers, Patternmakers - 6" Blade Length, 4R Graduation - 13C
- 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 South Korea*
*Store origin: KR*
*Last updated: 2026-02-24*