---
product_id: 88733911
title: "Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler"
brand: "mr. pen"
price: "€ 17.99"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mr. Pen"
url: https://www.desertcart.hr/products/88733911-mr-pen-t-square-t-ruler-12-inch-metal-ruler
store_origin: HR
region: Croatia
---

# 12-inch precision length Dual-sided laser-etched accurate graduations High-impact carbon steel durability Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler

**Brand:** mr. pen
**Price:** € 17.99
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your drafts—measure like a pro, design like a visionary!

## Quick Answers

- **What is this?** Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler by mr. pen
- **How much does it cost?** € 17.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/88733911-mr-pen-t-square-t-ruler-12-inch-metal-ruler)

## 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

- • **Versatile Multi-Tool:** Functions as T square, L square, and scale ruler—your all-in-one drafting essential.
- • **Dual-Sided Laser Etching:** Accurate inch (1/16) and centimeter (1mm) measurements on both sides for flawless drafting.
- • **Precision Meets Durability:** Crafted from high-impact carbon steel for long-lasting use in any professional setting.
- • **Optimized for Professionals:** Perfectly sized 12-inch ruler with an 8-inch calibrated T-head for precise alignment every time.
- • **Trusted by Creatives & Engineers:** Highly rated (#135 in Drafting Tools) and loved by architects, artists, and engineers alike.

## Overview

The Mr. Pen 12-inch T Square is a premium drafting tool made from durable carbon steel, featuring dual-sided laser-etched graduations in both inches and centimeters. Designed for architects, engineers, and artists, it combines precision and versatility as a T square, L square, and scale ruler, ensuring flawless measurements and alignment in every project.

## Description

Product description Mr. Pen T Squares T Square

Review: Well made and useful - Love the T Square. It is very useful for lining up my leather and getting the cut where I want it. Also, seems very well built. I will buy again from Mr. Pen.
Review: Love it!! - Works great for my embroidery business!! Very well made!!

## Features

- Black T ruler (12in), perfect for architects, engineers and artists
- Made from high impact carbon steel for durability
- T-ruler is largely and accurately laser printed on both sides. Inch and centimeter measurements (graduated in 16th of inch and 1mm)
- Can be used as T square, L square, L ruler
- 8inch/20cm calibrated t head

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F1ZFV69 |
| Best Sellers Rank | #25,993 in Office Products ( See Top 100 in Office Products ) #75 in Drafting Tools & Drafting Kits |
| Brand | Mr. Pen |
| Brand Name | Mr. Pen |
| Color | black, white |
| Customer Reviews | 4.6 out of 5 stars 3,586 Reviews |
| Graduation Range | 1/16 Inches |
| Item Dimensions L x W | 12"L x 8"W |
| Item Weight | 1 Grams |
| Manufacturer | Mr. Pen |
| Material | Carbon Steel , Metal |
| Material Type | Carbon Steel, Metal |
| Model | TS12 |
| Part Number | TS12 |
| Product Dimensions | 12"L x 8"W |
| Style | T,L Square,Square,T Square |
| Style Name | T,L Square,Square,T Square |
| UPC | 853126008265 |

## Product Details

- **Brand:** Mr. Pen
- **Color:** black, white
- **Graduation Range:** 1/16 Inches
- **Material:** Carbon Steel, Metal
- **Style:** T,L Square,Square,T Square

## Images

![Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler - Image 1](https://m.media-amazon.com/images/I/71btiJgn1xL.jpg)
![Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler - Image 2](https://m.media-amazon.com/images/I/71GOJZrmj0L.jpg)
![Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler - Image 3](https://m.media-amazon.com/images/I/71fYTp1Ix7L.jpg)
![Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler - Image 4](https://m.media-amazon.com/images/I/714C1VzmVhL.jpg)
![Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler - Image 5](https://m.media-amazon.com/images/I/91MBLI5F66L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can this be used in making precision markings or is it more for rough cut applications?**
A: I do not feel this is to be considered a precision instrument.  There are small bulges (drips), of paint along various edges that prevent one from being able to accurately draw straight lines or check an item for “square”.

**Q: How thick is this ruler?**
A: The Mr. Pen ruler is about 1/16" inch thick and is made of a good quality metal.  The metal is hard to bend and I personally like it.

**Q: Will this work at a Tshirt vinyl ruler?**
A: I'm not sure I understand your question.

**Q: Is this ruler 1.5" wide?**
A: The top portion is about 1.25 (the "top of the T") the longer part is 1.75" wide. Hope this helps

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well made and useful
*by A***R on January 8, 2026*

Love the T Square. It is very useful for lining up my leather and getting the cut where I want it. Also, seems very well built. I will buy again from Mr. Pen.

### ⭐⭐⭐⭐⭐ Love it!!
*by M***M on March 21, 2026*

Works great for my embroidery business!! Very well made!!

### ⭐⭐⭐⭐⭐ Great for the Price
*by J***E on March 28, 2019*

Getting this T-Square is a solid deal for a cheap price. It does what it's supposed to do by providing 90 angle edges for drawing my architecture plans, sections, and elevations. I normally use a bigger, more expensive, T-Square; I got this T-Square because of it's smaller size that allows me to carry around when I am traveling and unable to go to the studio to work. This T-Square is made out of strong metal, which makes it quite durable, thus allowing it to sustain for a long time. Furthermore, it provides both inch and millimeter measurements, which I found convenient for my drawings. The only minor issue I have with this T-Square is it's thickness, as a thinner edge will make drawing square edges more efficient with better visibility for sophisticated linework. However, the thickness of the T-Square is understandable, as it is made out of sturdy steel, and the thickness doesn't undermine its function. If you are looking for a cheap, small, travel-friendly T-Square, this T-Square is a decent choice.

## Frequently Bought Together

- Mr. Pen - T Square, T Ruler, 12 inch Metal Ruler, T Square Ruler, Drafting Tools, Architect Ruler, Set Square, Drafting Ruler, Tsquare, Truler, Architectural Triangle, Tee Ruler, L Square, Scale Ruler
- Mr. Pen- Carpenter Square, Framing Square, 8 inch x 12 inch , Carpenters Square , Right Angle Ruler, Framing Tools, L Shape Ruler, Metal Square, Steel Square
- anezus Self Healing Sewing Mat, 12inch x 18inch Rotary Cutting Mat Double Sided 5-Ply Craft Cutting Board for Sewing Crafts Hobby Fabric Precision Scrapbooking Project

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**Shop now:** [https://www.desertcart.hr/products/88733911-mr-pen-t-square-t-ruler-12-inch-metal-ruler](https://www.desertcart.hr/products/88733911-mr-pen-t-square-t-ruler-12-inch-metal-ruler)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-20*