---
product_id: 43167611
title: "Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles"
brand: "mr. pen"
price: "€ 20.80"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mr. Pen"
url: https://www.desertcart.ie/products/43167611-mr-pen-architectural-triangular-ruler-set-with-12-inch-triangular
store_origin: IE
region: Ireland
---

# 3-piece precision set 30/60 & 45/90° triangles shatterproof heavy plastic Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles

**Brand:** mr. pen
**Price:** € 20.80
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your drafting game with precision and style!

## Quick Answers

- **What is this?** Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles by mr. pen
- **How much does it cost?** € 20.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/43167611-mr-pen-architectural-triangular-ruler-set-with-12-inch-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

- • **Triple-Tool Power:** Includes 12" architect scale plus 11" and 8" precision triangles for versatile drafting.
- • **Permanent Markings:** Clear, large graduations with fade-resistant prints ensure long-lasting readability.
- • **Protractor Precision:** Integrated protractor cutout in 45/90 triangle for seamless angle measurements.
- • **Six Scales, One Ruler:** 12" triangular scale offers 3 sides with 6 different scales for quick, accurate conversions.
- • **Durability Meets Design:** Crafted from shatterproof, high-impact plastic to withstand daily professional use.

## Overview

The Mr. Pen Architectural Triangular Ruler Set is a professional-grade 3-piece drafting kit featuring a 12-inch triangular scale with six scales, an 11-inch 30/60 triangle, and an 8-inch 45/90 triangle with a built-in protractor. Made from shatterproof heavy plastic with permanent markings, it delivers durable, precise measurements ideal for architects, engineers, and design students.

## Description

desertcart.com : Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles : Office Products

Review: Best Price and Quality - I needed this set for a small art project I had. I mainly got it because it had the best price. I am impressed with the quality of the set. It comes with large right triangles (set squares) and a triangular scale. All 3 pieces are of high quality. The set squares are thick, and hard to break. They are 30-60 and 45 degree triangles. The 30-60 one is graduated 11"x6" and the 45-90 one is graduated 8"x8". There is a protractor in the middle of 45-90 triangle which is pretty cool. The scale is also very sturdy. It will not break. It seems like the prints on it are permanent. It's an architectural scale and it's in imperial units. Over all I am very happy with this product and I recommend it to others also.
Review: Exactly what we wanted! - Exactly what we wanted. Perfect size. These will get a ton of use by my daughter in college.

## Features

- Package Includes 3 Piece: 11” 30/60 Triangle, 8” 45/90 Triangle, 12” Architect Triangular Scale
- Large Clear Triangles, High Quality and Sturdy, Protractor Center Cut Out
- 12" Triangular Architect's Ruler Features 3 Sides with 6 Different Scales
- Quick and Accurate Selection of the Desired Scale
- Shatterproof High-Impact Heavy Plastic Triangular Scale

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B072M8JZ8R |
| Best Sellers Rank | #20,265 in Office Products ( See Top 100 in Office Products ) #67 in Drafting Tools & Drafting Kits |
| Brand | Mr. Pen |
| Color | Clear |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,310) |
| Date First Available | June 2, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7 ounces |
| Manufacturer | Mr. Pen |
| Manufacturer Part Number | SS03 |
| Material Type | Plastic |
| Product Dimensions | 12 x 12 x 0.04 inches |

## Product Details

- **Brand:** Mr. Pen
- **Color:** Clear
- **Material:** Plastic
- **Product Dimensions:** 12"L x 12"W
- **Style:** Modern

## Images

![Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles - Image 1](https://m.media-amazon.com/images/I/8182kiqFQ4L.jpg)
![Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles - Image 2](https://m.media-amazon.com/images/I/81i61x0bAWL.jpg)
![Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles - Image 3](https://m.media-amazon.com/images/I/81TcKWJLJIL.jpg)
![Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles - Image 4](https://m.media-amazon.com/images/I/812WhdWOODL.jpg)
![Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles - Image 5](https://m.media-amazon.com/images/I/81O0elh7bvL.jpg)

## Questions & Answers

**Q: is the architect's scale color coded or or all the sides red?**
A: The scale I received is color coded

**Q: How thick is the set squares?**
A: The thickness is about 0.1 inch.

**Q: What is the thickness of the triangle?**
A: Both the triangles are pretty thin. I'd say around 1/4" thick? Just an estimate, but I hope this helps!

**Q: Are increments for inches and centimeters in tenths?**
A: No.  Inches to 16th, centimeters to 8th

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best Price and Quality
*by B***L on June 14, 2017*

I needed this set for a small art project I had. I mainly got it because it had the best price. I am impressed with the quality of the set. It comes with large right triangles (set squares) and a triangular scale. All 3 pieces are of high quality. The set squares are thick, and hard to break. They are 30-60 and 45 degree triangles. The 30-60 one is graduated 11"x6" and the 45-90 one is graduated 8"x8". There is a protractor in the middle of 45-90 triangle which is pretty cool. The scale is also very sturdy. It will not break. It seems like the prints on it are permanent. It's an architectural scale and it's in imperial units. Over all I am very happy with this product and I recommend it to others also.

### ⭐⭐⭐⭐⭐ Exactly what we wanted!
*by A***R on January 28, 2026*

Exactly what we wanted. Perfect size. These will get a ton of use by my daughter in college.

### ⭐⭐⭐⭐⭐ Here’s Why I Gave This Product 5 Stars
*by B***Z on November 7, 2024*

I like this product very much because of the unusual, and very handy, innovative features “built in.” I admit that my training in mechanical drawing was many years ago. I’ve retained the T-square and angles that I used at what’s referred to in the U.S. as a “technical high school,” But doggone, I’ve misplaced them. I bought the product under discussion because I’m drawing a plan for a product I hope to manufacture. The innovative features I mentioned include “rulers” with imperial measures on the edges of both the 30-degree and 45-degree angles. Other clever features include a simple “French curve” cut into the middle of one angle and a protractor cut into the middle of the other angle. A separate triangular, scale ruler also goes with the set. None of the above features are to be found in my old antique set, nor in any other set I’ve looked at. I consider them unique in my limited drawing experience. Very clever, too! You get four drafting tools for the price of two. From a practical standpoint, the “extra” features save motion and time. One does not need to reach for either a separate French curve or protractor. They are already on the drawing board! As far as durability is concerned, I think they are adequate for my purposes. Time will tell. I’m inclined to think that any really detailed mechanical drawings required by anyone are going to be done on a so-called “Computer Assisted Drawing (CAD)" program these days. While hand-done drawings still fill a niche, they do, after all, represent a pretty ancient artistic skill set. Who cares! They’re fun to do! You can easily see the French Curve/Protractor/Rule features mentioned above in the manufacturer's illustrations on Amazon.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-20*