---
product_id: 110451749
title: "Mr. Pen- Professional Metal Compass with Wheel and Lock for Geometry, Compass Geometry Tool, Drawing Compass, Drafting Compass, Math Compass, Geometry Compass, Compass Drawing Tool, Compass Math"
price: "€ 23.10"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.gr/products/110451749-mr-pen-professional-metal-compass-with-wheel-and-lock-geometry
store_origin: GR
region: Greece
---

# Up to 18-inch circles Precision push-button lock Complete toolkit with extras Mr. Pen- Professional Metal Compass with Wheel and Lock for Geometry, Compass Geometry Tool, Drawing Compass, Drafting Compass, Math Compass, Geometry Compass, Compass Drawing Tool, Compass Math

**Price:** € 23.10
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your drafts with precision and style—because your work deserves the best!

## Quick Answers

- **What is this?** Mr. Pen- Professional Metal Compass with Wheel and Lock for Geometry, Compass Geometry Tool, Drawing Compass, Drafting Compass, Math Compass, Geometry Compass, Compass Drawing Tool, Compass Math
- **How much does it cost?** € 23.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/110451749-mr-pen-professional-metal-compass-with-wheel-and-lock-geometry)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lock-In Accuracy:** Push-button locking mechanism prevents any unwanted leg movement for consistent results.
- • **All-in-One Pro Kit:** Includes 10 extra leads, spare needle, screws, screwdriver, and reusable pouch for on-the-go convenience.
- • **Durable Metal Build:** Premium metal construction guarantees longevity and professional-grade performance.
- • **Versatile Circle Sizes:** Create perfect circles up to 18 inches—ideal for geometry, drafting, and art projects.
- • **Draw with Unmatched Precision:** Spring bow head and center wheel ensure flawless, stable circles every time.

## Overview

The Mr. Pen Professional Metal Compass is a high-quality drafting tool designed for precision geometry, art, and math applications. Featuring a spring bow head, push-button locking mechanism, and an extension beam for circles up to 18 inches, it comes with a complete accessory kit including extra leads, spare needle, screws, and a screwdriver—all housed in a reusable pouch. Trusted by thousands with a 4.4-star rating, this durable metal compass ensures smooth, accurate drawing and long-lasting performance.

## Description

desertcart.com : Mr. Pen- Professional Metal Compass with Wheel and Lock for Geometry, Compass Geometry Tool, Drawing Compass, Drafting Compass, Math Compass, Geometry Compass, Compass Drawing Tool, Compass Math : Office Products

Review: Very smooth, great quality - This is such a great set. Im using this for drawing and there are so many great options.
Review: Good set, works w/ mechanical pencils - Like it! But refillable lead is a pain, dulls quickly, breaks, must keep unscrewing to advance lead. Fortunately the Pencil holder attaches to larger compass and a slim mech. Pencil fits great, as shown in pic—that means advancing lead from end of pencil, no unscrewing, less interruption in drawing. For small compass w/ thick refillable lead, the sharpener is handy. Well worth the price, good quality!

## Features

- Professional Compass With Universal Adapter, Extension Beam For Math, Geometry, Art, Drafting And Drawing, Creates Circles Up To 18 Inches In Diameter
- Precision Geometry Compass With Spring Bow Head And Center Wheel Accompanied Quick Setting Adjustment With Push Button
- Mechanism Prevents Unintentional Leg Movements
- Premium Quality, Life-Time Satisfaction Guaranteed 10 Extra Lead, Spare Needle And Screws And Screw Driver Packaged In A Clear, Reusable Pouch. Easy To Carry And Store
- Quality assurance, please feel free to give us feedback, we will get in touch with you within 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MJVSB7D |
| Best Sellers Rank | #15,588 in Office Products ( See Top 100 in Office Products ) #9 in Drafting Compasses |
| Brand | Mr. Pen |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,787) |
| Date First Available | January 11, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.2 ounces |
| Item model number | GP01 |
| Manufacturer | Mr. Pen |
| Manufacturer Part Number | GP01 |
| Material Type | Metal |
| Package Dimensions | 6.69 x 2.76 x 0.67 inches |

## Images

![Mr. Pen- Professional Metal Compass with Wheel and Lock for Geometry, Compass Geometry Tool, Drawing Compass, Drafting Compass, Math Compass, Geometry Compass, Compass Drawing Tool, Compass Math - Image 1](https://m.media-amazon.com/images/I/71jcBnMQZRL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the maximum diameter? The description says 18" while the video says 24"**
A: With the "extender leg" attached I am able to open the compass to a diameter of 11.5".  I don't see how you could expand it to 18" or 24".

**Q: Can you use this with other drawing utensils like markers?**
A: Yes you can use markers and pens and pencils. Built in there is a lead, but there's an attachment that lets you use any kind of writing pen/marker/pencil that is up to 1/2 in diameter.

**Q: What is the diameter of the lead? I need more than the standard black lead. Most compass's are 2mm>**
A: This is also 2mm.

Make one, there's plenty of cool compass plans available online. That's what I did for my trammel points (beam compass)

**Q: Does the small compass use the same 2 mm replacement leads?**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very smooth, great quality
*by J***E on January 10, 2026*

This is such a great set. Im using this for drawing and there are so many great options.

### ⭐⭐⭐⭐⭐ Good set, works w/ mechanical pencils
*by J***Y on July 2, 2023*

Like it! But refillable lead is a pain, dulls quickly, breaks, must keep unscrewing to advance lead. Fortunately the Pencil holder attaches to larger compass and a slim mech. Pencil fits great, as shown in pic—that means advancing lead from end of pencil, no unscrewing, less interruption in drawing. For small compass w/ thick refillable lead, the sharpener is handy. Well worth the price, good quality!

### ⭐⭐⭐⭐ Not a pretty picture, but neither was my first experience without any instructions.
*by L***Y on May 31, 2022*

What you see is my attempt to use my Mr. Pen set. I was looking forward to this set because I wanted to start working with mandalas. My only experience was high school geometry and that was limited to the usual cheap compass that came in a school supply set. The cute little mustache print and thank you included did not make up for the lack of instructions. It does say a professional set, so maybe I should have looked for a beginner set to learn the mechanics. I attempted on my own, but there were pieces included I simply didn't have a clue about. Again, I'm not a professional with a compass. I can't tell you how many times I had to chase that small screw when it flew off its pin. (I'm left handed and sometimes get righty-lefty backwards.) That pin is tiny. Be careful you don't lose it, or the screw head. I didn't understand the extender at all, so I turned to online videos. Mr. Pen does have a video, but it moves quickly. His hands are in the way sometimes. Not all the things in my box were addressed, so I still don't know what one thing is. I did manage to see enough on the video to figure out the extender. After I removed it, I realized the pen/pencil will slide back and forth on the extender to make different size circles along with screwing the compass wider or more narrow. I'm sure that will be a nice feature after I become more adept. While I was chasing those tiny screws, I saw the random marks on my paper you can see in the photo. I was trying to fit the pencil holder on the smaller compass to no avail. However, in that process, I noticed I made more marks. Well, what do you know? I discovered there's lead on one side for both compasses, you don't actually need a pencil unless you are doing the really big circles from the extender. Again, it could be my lack of experience, but some simple written instructions and photo showing parts would have been helpful and less frustrating. As it is advertised as a professional set, I don't have anything critical to say. I'm a professional artist, not architect. I'm imagine that made a difference in my experience. It seems sturdy enough, especially for how I will be using it. Eventually, I did figure most of the bits and pieces out. One thing included is supposed to be a screwdriver (from the video), but it looks like it has a blade and you need a tiny screw drive to turn it. I thought it was some sort of sharpener until I watched the video. I will have to watch again to figure out where and how to use it. The other thing I am clueless about. I can't tell you what it is because I don't have a name for it. It wasn't addressed in the video. It appears to attach somewhere to something. I'm sure, eventually, I will get it figured out. My experience with the set, may not be typical, but if you are a beginner using such tools as I am, I hope this review will give you advance idea of what you may be up against while setting it all up. As to the photo. I used a not so great photo because I thought it would give you an idea of the sizes you can make. You will see the random marks I referenced in my review. I just used a sheet of practice pad to make the circles. As I use my rulers for artwork, they are clear. I knew nothing would show up in the photo. What you see is a seam measure for sewing, but it has inches and metric on it. I made as small a circle as I could with the smaller compass and then as large as I could. The arcs off to the right side were made with larger compass, the extender and a pencil. I did not have the larger compass extended as far as it would go, but I did have the pencil extender at full length. I didn't have large enough paper at hand to complete the biggest circle, but you can get an idea of how large a circle this set can make. You can go from 1/2 inch diameter up to very large dinner plate sized circles that might be good for murals, signs etc. Again, I think this set will be good for my purpose after I get better at using it, but instructions would have been so helpful.

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-10*