---
product_id: 72328654
title: "Metric Engineer Scale Ruler, Ruler, 12\" Aluminum Scale Ruler, Triangular Scale, Scale Ruler for Blueprint, Triangle Ruler, Metric Engineering, Drafting Ruler"
brand: "mr. pen"
price: "€ 12.64"
currency: EUR
in_stock: true
reviews_count: 11
category: "Mr. Pen"
url: https://www.desertcart.be/products/72328654-metric-engineer-scale-ruler-ruler-12-aluminum-scale-ruler-triangular
store_origin: BE
region: Belgium
---

# Color-coded scales 30cm precision length Triangular aluminum build Metric Engineer Scale Ruler, Ruler, 12" Aluminum Scale Ruler, Triangular Scale, Scale Ruler for Blueprint, Triangle Ruler, Metric Engineering, Drafting Ruler

**Brand:** mr. pen
**Price:** € 12.64
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your drafting game with precision that lasts!

## Quick Answers

- **What is this?** Metric Engineer Scale Ruler, Ruler, 12" Aluminum Scale Ruler, Triangular Scale, Scale Ruler for Blueprint, Triangle Ruler, Metric Engineering, Drafting Ruler by mr. pen
- **How much does it cost?** € 12.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/72328654-metric-engineer-scale-ruler-ruler-12-aluminum-scale-ruler-triangular)

## Best For

- mr. pen enthusiasts

## Why This Product

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

## Key Features

- • **Laser-Cut Accuracy:** Never worry about faded markings—laser-etched scales stay sharp and clear.
- • **Versatile Metric Scales:** Includes 1:20, 1:25, 1:50, 1:75, 1:100, and 1:125 for all your blueprint needs.
- • **Effortless Scale Selection:** Color-coded triangular faces speed up your workflow with quick scale identification.
- • **Precision Meets Durability:** Crafted from high-impact aluminum for a lifetime of accurate measurements.
- • **Engineered for Professionals:** Perfect for architects, engineers, and designers who demand precision and style.

## Overview

The Mr. Pen Metric Engineer Scale Ruler is a 12-inch, triangular aluminum drafting tool designed for professional accuracy. Featuring durable laser-etched, color-coded scales ranging from 1:20 to 1:125, it ensures quick, precise measurements on architectural blueprints and engineering drawings. Built to withstand heavy use, this ruler combines functionality with sleek design, making it a must-have for engineers and architects.

## Description

desertcart.com : Mr. Pen- Metric Engineer Scale Ruler, Ruler, 12" Aluminum Scale Ruler, Triangular Scale, Scale Ruler for Blueprint, Triangle Ruler, Metric Engineering, Drafting Ruler : Office Products

Review: Solid, accurate and easy to read scale - This is a decent, well made product. The markings (on my scale, at least) were clearly etched on - I can feel the slight indentation of the metal where the markings are placed. The markings are clear and crisp. The color coding on each side of the scale is a nice feature. I would suggest that the seller take another look at this page and fix some of the product photos and descriptive copy. It almost appears as if they just used the same page for both their metric and imperial scales. Some of the pictures show imperial scales, while this item is definitely METRIC scaled. I'm not complaining about the product I got - I ordered a metric scale, and that's what I got. But people might be mislead as to what they are getting - even the text has some ambiguities. I do agree with some of the other reviewers in noting that the ends of the ruler can be a bit sharp. A minute or so spent with some fine grit sandpaper will take care of this, but I think that this should be done at the manufacturing stage.
Review: Great product! No issues at all. - This is a great metric ruler for the money! I did not have any damage issues other reviewers were talking about. I am not an architect or engineer but CAD and 3D print for scale model kits (mainly in 1/35, 1/16, and 1/48 scales). This ruler is sturdy and handy for my uses. Highly recommended!

## Features

- 30cm Engineer Scale Designed To Facilitate The Drafting And Measuring Of Architectural Drawings, Such As Floor Plans, Blue Prints, And Orthographic Projections
- Triangular Ruler Made From High Impact Aluminum, Build To Last
- Engineer Ruler With Durable Laser Cut Prints For Accuracy. They Will Not Wipe Or Scratch Off Ever
- Color Coded Triangular Scale For Easy And Quick Selection Of The Desired Scale
- Scale: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DNKNLSJ |
| Best Sellers Rank | #50,104 in Office Products ( See Top 100 in Office Products ) #228 in Drafting Tools & Drafting Kits |
| Brand | Mr. Pen |
| Brand Name | Mr. Pen |
| Color | White |
| Customer Reviews | 4.6 out of 5 stars 604 Reviews |
| Item Dimensions L x W | 3.39"W |
| Manufacturer | Mr. Pen |
| Material | Aluminum |
| Material Type | Aluminum |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | SE01 |
| Product Dimensions | 3.39"W |
| Style | Triangular |
| Style Name | Triangular |
| UPC | 853126008197 |

## Product Details

- **Brand:** Mr. Pen
- **Color:** White
- **Material:** Aluminum
- **Product Dimensions:** 3.39"W
- **Style:** Triangular

## Images

![Metric Engineer Scale Ruler, Ruler, 12" Aluminum Scale Ruler, Triangular Scale, Scale Ruler for Blueprint, Triangle Ruler, Metric Engineering, Drafting Ruler - Image 1](https://m.media-amazon.com/images/I/71o5e1uvbQL.jpg)

## Questions & Answers

**Q: Do markings stay on this ruler?**
A: It seems your mileage may vary.  Some people say they received a ruled with etched/engraved markings.  I just received one of these and the markings are just printed on top of the aluminum - they are not etched could come off.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid, accurate and easy to read scale
*by M***Z on July 21, 2020*

This is a decent, well made product. The markings (on my scale, at least) were clearly etched on - I can feel the slight indentation of the metal where the markings are placed. The markings are clear and crisp. The color coding on each side of the scale is a nice feature. I would suggest that the seller take another look at this page and fix some of the product photos and descriptive copy. It almost appears as if they just used the same page for both their metric and imperial scales. Some of the pictures show imperial scales, while this item is definitely METRIC scaled. I'm not complaining about the product I got - I ordered a metric scale, and that's what I got. But people might be mislead as to what they are getting - even the text has some ambiguities. I do agree with some of the other reviewers in noting that the ends of the ruler can be a bit sharp. A minute or so spent with some fine grit sandpaper will take care of this, but I think that this should be done at the manufacturing stage.

### ⭐⭐⭐⭐⭐ Great product! No issues at all.
*by J***E on April 18, 2024*

This is a great metric ruler for the money! I did not have any damage issues other reviewers were talking about. I am not an architect or engineer but CAD and 3D print for scale model kits (mainly in 1/35, 1/16, and 1/48 scales). This ruler is sturdy and handy for my uses. Highly recommended!

### ⭐⭐⭐⭐⭐ Have purchased from Mr Pen before!
*by E***T on December 29, 2024*

These three sided architectural rulers are a must have for any professional who uses these rulers. They are very well made, precise and made of good metal materials.

## Frequently Bought Together

- Partyreal CA11755
- Staedtler 12-Inches Engineers Triangular Scale (98718-34BK)
- Mr. Pen Architectural Scale Ruler, 12 Inch, White, Contractor's Scaling Ruler, Drawing & Drafting Tool

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-09-11*