---
product_id: 207801654
title: "Professional Compass for Geometry, Extra Lead"
brand: "mr. pen"
price: "$21.31"
currency: USD
in_stock: true
reviews_count: 13
url: https://www.desertcart.us/products/207801654-professional-compass-for-geometry-extra-lead
store_origin: US
region: United States of America
---

# 8-inch max circle diameter all-metal nickel-plated durability spring bow head for precision Professional Compass for Geometry, Extra Lead

**Brand:** mr. pen
**Price:** $21.31
**Availability:** ✅ In Stock

## Summary

> 🎯 Draw your future with precision and style!

## Quick Answers

- **What is this?** Professional Compass for Geometry, Extra Lead by mr. pen
- **How much does it cost?** $21.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/207801654-professional-compass-for-geometry-extra-lead)

## 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

- • **Portable Pro:** Comes in a sleek reusable pouch—carry your drafting essential anywhere, anytime.
- • **Built to Last:** Crafted from nickel-plated metal, this compass withstands daily use without losing its edge.
- • **Extra Lead Included:** Stay ready for any project with spare lead included, so your creativity never pauses.
- • **Precision Perfected:** Spring bow head and center wheel lock legs for zero slip, ensuring flawless circles every time.
- • **Effortless Adjustments:** Smooth leg adjustments let you dial in exact measurements with ease and confidence.

## Overview

The Mr. Pen Professional Compass is a high-quality, all-metal drafting tool designed for students, engineers, and artists. It features an 8-inch maximum circle diameter, a spring bow head with a center wheel to prevent leg slippage, and comes with extra lead and a reusable pouch for portability. Trusted by thousands, it combines durability, precision, and ease of use to elevate your geometry and technical drawing projects.

## Description

Professional Compass
Professional Compass
Professional Compass
Professional Compass
- Small American Family Business
- Founded by Teachers in Louisiana
- We love our customers
Having firsthand experience teaching in at-risk schools in different parts of the United States, seeing the daily struggles of students and teachers, we, a few business-minded teachers, founded Mr. Pen with a simple purpose: serving the schools in our community by providing them with high quality and affordable school supplies and tools to help them in their efforts.

## Features

- 1 High Quality Professional Bow Compass For Math, Geometry, Art, Drafting And Drawing; Creates Circles Up To 8 Inches In Diameter
- Precision Geometry Compass With Spring Bow Head And Center Wheel Prevents Unintentional Leg Movements
- All Metal, Nickel Plating Compass, Lifelong Satisfaction Guaranteed
- Easy To Adjust Legs, Great For Precise Drawings
- Packaged In A Clear, Reusable Pouch. Easy To Carry And Store

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Additional Features | Portable |
| Age Range Description | Kid, Teen, Adult |
| Asin | B086R77B7Y |
| Best Sellers Rank | #2,949 in Office Products (See Top 100 in Office Products) #5 in Drafting Compasses |
| Brand Name | Mr. Pen |
| Color | Silver |
| Customer Reviews | 4.4 4.4 out of 5 stars (8,494) 4.4 out of 5 stars |
| Drill Point | Ultra Fine |
| Grip Type | Smooth |
| Hand Orientation | Right |
| Included Components | Extra Lead, Pouch |
| Item Diameter | 8 inches |
| Item Weight | 0.06 kg |
| Line Size | 0.3mm |
| Manufacturer | Mr. Pen |
| Material Type | Metal |
| Model Number | GS01 |
| Recommended Uses For Product | Math, Geometry, Art, Drafting, Drawing |
| Unit Count | 1 Count |
| Upc | 850008597787 |
| Writing Instrument Form | Technical Pen |

## Product Details

- **Age Range (Description):** Kid, Teen, Adult
- **Brand:** Mr. Pen
- **Color:** Silver
- **Material:** Metal
- **Writing Instrument Form:** Technical Pen

## Images

![Professional Compass for Geometry, Extra Lead - Image 1](https://m.media-amazon.com/images/I/61s3v5EVBOL.jpg)

## Available Options

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

## Questions & Answers

**Q: Are extra leads easily available, if needed?**
A: Hi, Thank you for your question. You can just message us on Amazon or email us and we will ship you extra lead anytime. free of charge.

**Q: How small is the smallest drawable circle?**
A: I just drew a circle in the all-the-way closed position. It was 5/8".

**Q: No matter how much i tighten the screws, both the lead and needle push up when i try to draw a circle. how can i prevent this?**
A: When I replace the lead I make sure the screws are loose enough for me to slide the lead all the way to the back of the compass. Then tighten it slowly and make sure the lead hasn’t moved while I tighten it more. I had the same problem when I first replaced the lead but found the right way to tighten the lead.

**Q: Can you use chalk instead of lead?**
A: No. The holder on the compass isn't big enough.  If you wand to tape chalk to the arm it might work,

## Customer Reviews

### ⭐⭐⭐⭐⭐ Measuring sculpted 💅 nails
*by  on Reviewed in the United States July 2, 2026*

I am using this compass as a measuring tool for measuring the length of acrylic/gel sculpted nails; width of clients nails that need tapering. So, definitely a versatile product use. Using a tape measure was cumbersome, and since I do not need an actual measurement number, just a constant pt A to pt B, this is a perfect tool! Such pretty color (rose gold)! Metal feels sturdy, but not heavy! Twelve sharp lead replacements, two metal point replacements with extra screws and washers. A cute mustache sticker! And a sweet 'thank you' from Kaelyn. 🩷 If you sculpt nails, definitely buy this for consistent lengths.

### ⭐⭐⭐⭐⭐ Shop with Mr. Pen and you will be completely pleased!
*by  on Reviewed in the United States July 13, 2026*

I have always been 100 percent happy with every product from Mr. Pen. I have been their customer for years and have been pleased with the price, the quality and even the packaging. I even get a smile from the Mr. Pen sticker that is included with every delivery. This protractor is of the quality and usefulness of a much more expensive product. I love that my small purchases help to support an American small business and a group of teachers who saw the need of students and they created this high quality company. Support this company! Be happy that you have saved money and have purchased a product worth the price.

### ⭐⭐⭐⭐ Good for Price, but flawed
*by  on Reviewed in the United States July 21, 2026*

Works pretty well, and seems good for the price, but does not work near it's maximum advertised size. 3.5" - 3.75" inch radius is a more accurate maximum, above that it tends to fall apart

## Frequently Bought Together

- Mr. Pen- Professional Compass for Geometry, Extra Lead, Metal Compass, Compass, Compass Drawing Tool, Drawing Compass, Drafting Compass, Compass for Students, Compass for Woodworking, Compass Geometry
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**Shop now:** [https://www.desertcart.us/products/207801654-professional-compass-for-geometry-extra-lead](https://www.desertcart.us/products/207801654-professional-compass-for-geometry-extra-lead)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-16*