---
product_id: 31118105
title: "Precision Steel Square - Professional Grade, High-Accuracy Tool for Machinists & Woodworkers, Durable Construction, 4\" Size - 3020-4"
brand: "starrett"
price: "S$282"
currency: SGD
in_stock: true
reviews_count: 4
url: https://www.desertcart.sg/products/31118105-precision-steel-square-professional-grade-high-accuracy-tool-for-machinists
store_origin: SG
region: Singapore
---

# Accuracy: 0.005mm Includes: Fitted Case Material: Stainless Steel Precision Steel Square - Professional Grade, High-Accuracy Tool for Machinists & Woodworkers, Durable Construction, 4" Size - 3020-4

**Brand:** starrett
**Price:** S$282
**Availability:** ✅ In Stock

## Summary

> 🔧 Measure Up to Perfection!

## Quick Answers

- **What is this?** Precision Steel Square - Professional Grade, High-Accuracy Tool for Machinists & Woodworkers, Durable Construction, 4" Size - 3020-4 by starrett
- **How much does it cost?** S$282 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/31118105-precision-steel-square-professional-grade-high-accuracy-tool-for-machinists)

## 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

- • **Compact Size:** 4-inch size perfect for both machinists and woodworkers on the go.
- • **Durable Design:** Crafted from hardened, ground, and lapped stainless steel for longevity.
- • **Protective Case:** Comes with a fitted plastic case to keep your tool safe and sound.
- • **Professional Quality:** Designed for professionals who demand the best in their craft.
- • **Precision Engineering:** Achieve accuracy to 0.005mm for flawless measurements.

## Overview

The Starrett Precision Steel Square is a professional-grade tool designed for machinists and woodworkers, offering exceptional accuracy of 0.005mm in a compact 4-inch size. Its durable stainless steel construction ensures longevity, while the included fitted plastic case provides protection for your investment.

## Description

Starrett Precision Steel Square - Professional Grade, High-Accuracy Tool for Machinists & Woodworkers, Durable Construction, 4" Size - 3020-4

## Features

- Accuracy to 0.005mm (.0002 inch) for every 150mm (6 inch).
- Hardened, ground and lapped stainless steel construction on both the blade and the beam.
- Fitted plastic case

## Images

![Precision Steel Square - Professional Grade, High-Accuracy Tool for Machinists & Woodworkers, Durable Construction, 4" Size - 3020-4 - Image 1](https://m.media-amazon.com/images/I/41eWT+njkAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Beautifully machined and highly accurate
  

*by R***S on Reviewed in the United States on July 25, 2020*

Meets the same high standards as Starrett's other Toolmaker's series of squares. I suppose the Master Precision series is even higher quality, and American made. But at 2 1/2 times the price, not worth it for any but the most demanding machinists.For me, this square is more than adequate for tool set up and woodworking. I bought it to complement my 6" Toolmaker's square because the smaller size works better for me on precise layouts and checking jointed edges for square. It's probably overkill for most woodworking applications. Nonetheless, I have had issues with burring the brass edges found on most squares made specifically for woodworkers.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Four Stars
  

*by A***R on Reviewed in the United States on January 25, 2016*

Quality product.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Five Stars
  

*by R***D on Reviewed in the United States on January 9, 2015*

Very nice and very square.  Expensive, but precise.

---

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**Shop now:** [https://www.desertcart.sg/products/31118105-precision-steel-square-professional-grade-high-accuracy-tool-for-machinists](https://www.desertcart.sg/products/31118105-precision-steel-square-professional-grade-high-accuracy-tool-for-machinists)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-12*