---
product_id: 82460750
title: "Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 4 x 2.5 Inch"
brand: "boomgood"
price: "$37.11"
currency: USD
in_stock: true
reviews_count: 8
category: "Boomgood"
url: https://www.desertcart.ec/products/82460750-machinist-square-precision-engineer-wide-seat-square-90-right-angle
store_origin: EC
region: Ecuador
---

# DIN 875 Grade 1 precision Hardened, tempered & polished steel 4x2.5 inch wide seat design Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 4 x 2.5 Inch

**Brand:** boomgood
**Price:** $37.11
**Availability:** ✅ In Stock

## Summary

> 📐 Nail every angle like a pro — precision that sets you apart!

## Quick Answers

- **What is this?** Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 4 x 2.5 Inch by boomgood
- **How much does it cost?** $37.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/82460750-machinist-square-precision-engineer-wide-seat-square-90-right-angle)

## Best For

- boomgood enthusiasts

## Why This Product

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

## Key Features

- • **Rock-Solid Rigidity:** Tapered self-locking rivets permanently fix blade to beam, ensuring zero flex under pressure.
- • **Compact Yet Commanding:** 4-inch blade with 2.5-inch beam offers perfect balance of portability and stability.
- • **Premium Hardened Steel Build:** Crafted from tempered, polished steel for durability and long-lasting precision.
- • **Protective Carry Case Included:** Keep your standard of square pristine and ready with the included plastic case.
- • **Unmatched Precision Engineering:** Certified DIN 875 Grade 1 accuracy for flawless right angles every time.

## Overview

This Machinist Square is a precision-engineered tool built to DIN 875 Grade 1 standards, featuring a hardened, tempered, and polished steel construction. Its 4x2.5 inch wide seat design with permanently fixed blade ensures absolute rigidity and true right angles inside and out. Ideal for machine setup, woodworking, and laboratory use, it comes with a protective plastic case to maintain its status as your go-to standard for accuracy.

## Description

The heavy square base ensures stability and precision, you will love the weight, balance and design of this engineer square. The blade is permanently fixed to the beam by means of tapered self locking rivets which ensure complete rigidity. Blade edges and beam faces are precisely ground and polished for straight and smooth, have an inside notch for accuracy. This machinist square accuracy reaches DIN 875 Grade 1, it is THE square that you proof everything else to. Specification: Material: Hardened Steel(45 Steel) Precision: DIN 875 Grade 1 Size:100x63mm(4x2.5 inch) Use For: Suitable for use in laboratory;woodworking, precision layout work and machine set-up Package Included: 1 x Wide Seat Square NOTE: 1. The square comes in a plastic case and wrapped in clear plastic with oil on it for protection, it's very easy to wipe off with a towel before use. 2. We recommend storing it back in it's case after use it, so that makes sure it will always remain THE standard of square for you.

Review: Excellent, accurate square (that's actually square) - Excellent square for cheap. Checked for square using the parallel line test and they look perfect to me. Highly recommend.
Review: High quality machinist square, essential for woodworkers - I use this little square for woodworking all the time. Absolutely all the time! You want to square up your table saw, you need this you're making a box you need to check the inside angles you need this. Very solid feel. I do recommend to apply some 3-in-1 oil as soon as you use it the first time to keep it from getting a little rust on it.

## Features

- Precision: DIN 875 Grade 1,designed for precision layout, machine set-up and laboratory use
- Squares are true right angles both inside and outside
- These squares are made of hardened, tempered and polished steel, beams and blades are ground and polished for parallelism; The blade is permanently fixed to the beam by means of tapered self locking rivets which ensure complete rigidity
- 4 inch blade and 2.5 inch beam, length of blade is measured from corner edge of beam to end of blade
- The small plastic case it comes with makes sure that it will always remain THE standard of square for you from now on

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07H7GLWZ7 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #24,552 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Carpentry Squares |
| Color | Silver |
| Customer Reviews | 4.3 4.3 out of 5 stars (917) |
| Date First Available | September 10, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 7.8 ounces |
| Manufacturer | Boomgood |
| Material | Hardened Steel |
| Measurement System | Inch |
| Part Number | BM0907 |
| Product Dimensions | 3.94 x 2.48 x 0.43 inches |
| Size | 100x63mm(4x2.5 inch) |
| Style | Square |

## Product Details

- **Brand:** Boomgood
- **Color:** Silver
- **Graduation Range:** 2.5 Inches
- **Material:** Hardened Steel
- **Style:** Square

## Images

![Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 4 x 2.5 Inch - Image 1](https://m.media-amazon.com/images/I/716bzOUgdvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent, accurate square (that's actually square)
*by H***K on January 6, 2026*

Excellent square for cheap. Checked for square using the parallel line test and they look perfect to me. Highly recommend.

### ⭐⭐⭐⭐⭐ High quality machinist square, essential for woodworkers
*by A***R on November 20, 2025*

I use this little square for woodworking all the time. Absolutely all the time! You want to square up your table saw, you need this you're making a box you need to check the inside angles you need this. Very solid feel. I do recommend to apply some 3-in-1 oil as soon as you use it the first time to keep it from getting a little rust on it.

### ⭐⭐⭐⭐⭐ Get the right tool for your job
*by D***2 on November 25, 2025*

If you know what this is, you know what it for. It is quality built for exacting needs. I recently purchased a new miter saw this square is perfect for setting up my saw. Makes setup a straight forward job.

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-27*