--- product_id: 263716582 title: "Professional Compass with Lock, Up to 18 inch Diameter, Compass for Geometry, Drafting Compass, Precision Compass Math, Compass Drawing, Compass with Wheel, Metal Compass Geometry | Precision Drafting Compass with Extension Leg, Pencil Holder, Extra Lead & Needles, Geometry Tool for Drawing Circles, Math" brand: "mr. pen" price: "€ 30.80" currency: EUR in_stock: true category: "Mr. Pen" url: https://www.desertcart.be/products/263716582-professional-compass-with-lock-up-to-18-inch-diameter-compass store_origin: BE region: Belgium --- # Draws circles up to 18 inches Push-button quick leg adjustment Includes screwdriver & spare parts Professional Compass with Lock, Up to 18 inch Diameter, Compass for Geometry, Drafting Compass, Precision Compass Math, Compass Drawing, Compass with Wheel, Metal Compass Geometry | Precision Drafting Compass with Extension Leg, Pencil Holder, Extra Lead & Needles, Geometry Tool for Drawing Circles, Math **Brand:** mr. pen **Price:** € 30.80 **Availability:** βœ… In Stock ## Summary > πŸ–ŠοΈ Master every curve with precision and style! ## Quick Answers - **What is this?** Professional Compass with Lock, Up to 18 inch Diameter, Compass for Geometry, Drafting Compass, Precision Compass Math, Compass Drawing, Compass with Wheel, Metal Compass Geometry | Precision Drafting Compass with Extension Leg, Pencil Holder, Extra Lead & Needles, Geometry Tool for Drawing Circles, Math by mr. pen - **How much does it cost?** € 30.80 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/263716582-professional-compass-with-lock-up-to-18-inch-diameter-compass) ## 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 - β€’ **Lock-In Accuracy:** Spring bow head and thumbwheel lock legs to prevent any slip during your critical drafts. - β€’ **Sleek & Portable:** Compact, reusable pouch keeps your compass and accessories organized and travel-ready. - β€’ **Ready for Anything:** Comes with 10 extra leads, spare needles, screws, and a handy screwdriverβ€”never get stuck mid-project. - β€’ **Precision Meets Power:** Create flawless circles up to 18 inches with metal durability and a smooth extension beam. - β€’ **Universal Compatibility:** Fits pencils, pens, and mechanical pencils with a versatile adapter for all your drawing tools. ## Overview The Mr. Pen Professional Compass is a premium metal drafting tool designed for precision geometry, art, and math. It features a push-button quick adjustment mechanism, a spring bow head to lock legs securely, and an extension beam for circles up to 18 inches. Compatible with various writing instruments via a universal adapter, it includes extra leads, needles, screws, and a screwdriver, all packed in a reusable pouch for easy storage and portability. ## Description 1 Precision Compass:Draws Circles Up To 18 Inches In DiameterMade From Metal, Durable For LifeSpring Bow Head And Thumbwheel To Prevent Unintended Movement In The LegsPush Button Mechanism For Quick Leg AdjustmentInterchangeable Leads And NeedlesUniversal Adapter:Fits Pencils, Pens, Mechanical Pencils EvenExtension Beam:Easy To Draw Big Circles Up To 18 Inches Using The Beam10 Extra LeadExtra Needle And ScrewsMetal Screw DriverTo Loosen And Tighten The Screws In The Compass Easily To Your Preferred Setting ## 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 | #13,767 in Office Products ( See Top 100 in Office Products ) #31 in Drafting Compasses | | Brand | Mr. Pen | | Customer Reviews | 4.2 4.2 out of 5 stars (2,556) | | Date First Available | 8 March 2019 | | Item Weight | 118 g | | Manufacturer | Mr. Pen | | Manufacturer Part Number | GP01 | | Material Type | Metal | | Model number | GP01 | | Package Dimensions | 16.99 x 7.01 x 1.7 cm; 118 g | ## Images ![Professional Compass with Lock, Up to 18 inch Diameter, Compass for Geometry, Drafting Compass, Precision Compass Math, Compass Drawing, Compass with Wheel, Metal Compass Geometry | Precision Drafting Compass with Extension Leg, Pencil Holder, Extra Lead & Needles, Geometry Tool for Drawing Circles, 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 ## Frequently Bought Together - 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 - DIYSELF 1 Pcs Craft Hobby Knife Exacto Knife with 11 Pcs Stainless Steel Blade Kit, 1pcs Steel 15CM Ruler for Art, Scrapbooking, Stencil (Purple) - Calligraphy Pen Set --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/263716582-professional-compass-with-lock-up-to-18-inch-diameter-compass](https://www.desertcart.be/products/263716582-professional-compass-with-lock-up-to-18-inch-diameter-compass) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-08-19*