--- product_id: 447968854 title: "Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies" brand: "genius lab gear" price: "€ 26.33" currency: EUR in_stock: true reviews_count: 5 category: "Genius Lab Gear" url: https://www.desertcart.pt/products/447968854-genius-lab-gear-the-pocket-physicist-wallet-ruler-and-unit store_origin: PT region: Portugal --- # 3-inch stainless steel ruler Instant physics constants & unit conversions Precision protractor & compass combo Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies **Brand:** genius lab gear **Price:** € 26.33 **Availability:** ✅ In Stock ## Summary > 🧠 Carry Genius Everywhere: Your Pocket Physicist, Ready for Every Eureka Moment! ## Quick Answers - **What is this?** Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies by genius lab gear - **How much does it cost?** € 26.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/447968854-genius-lab-gear-the-pocket-physicist-wallet-ruler-and-unit) ## Best For - genius lab gear enthusiasts ## Why This Product - Trusted genius lab gear brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **The Ultimate STEM Gift:** Perfect for students, professors, and professionals—stand out with a tool that inspires genius. - • **Pocket-Sized Powerhouse:** Credit card-sized multitool fits effortlessly in your wallet or lab coat. - • **Built to Last a Lifetime:** Durable stainless steel construction designed to withstand years of study and research. - • **Physics at Your Fingertips:** Laser-engraved essential constants and equations eliminate frantic searches during crunch time. - • **Precision Meets Practicality:** Laser-cut ruler with metric & imperial units, 5° accurate protractor, and compass for flawless sketches. ## Overview The Genius Lab Gear Pocket Physicist is a durable, credit card-sized stainless steel multitool combining a 3-inch ruler, protractor, compass, and essential physics constants. Designed for physics students, educators, and professionals, it offers quick access to unit conversions and equations, making it an indispensable companion from classroom homework to advanced research. ## Description Unlock Quantum Possibilities with The Pocket Physicist: Your Ultimate EDC Companion Attention, physicists of the world! Whether you’re an experimental wizard or a theoretical thinker, behold The Pocket Physicist—a compact marvel designed to solve your everyday technical problems. Let’s delve into what makes this stainless-steel wonder stand out: Silky Smooth Matte Black Finish: The laser-cut edges, gently filleted and coated in matte black enamel, transform handling into a pleasure. No more worries about it carving into your pencil lead during intense lab sessions. Surprisingly Massive Feel: Unlike flimsy tools, The Pocket Physicist exudes substance. It’ll stay put even in a stack of papers or amidst intricate drawings. Laser-Engraved Precision: Markings and text won’t fade like ink-printed rulers. Depend on accuracy, experiment after experiment. Features Packed into This Tiny Dynamo: Solid Metal Design: At just 3 inches, it slips into your wallet effortlessly. And yes, it’s TSA compliant—perfect for your scientific escapades. Physics and Engineering Essentials: 30 physical constants, 24 fundamental equations (including Maxwell’s microscopic and macroscopic gems) Conversion Mastery: Handle temperature, pressure, particle mass, length, and power units. Need a trigonometry reference? It’s got you covered. Dual Straight-Edge: Imperial and metric rulers (up to 85 mm), zeroed at the edge for precise height measurements. Angle Wizardry: Measure and draw angles with 5-degree resolution. Pi to 26 Digits: Because, well, why not? Who Needs The Pocket Physicist? Students: Ace your physics classes. Professionals: Enhance your toolbox. Teachers: Elevate your demonstrations. Get The Pocket Physicist today and carry quantum curiosity wherever you go! Review: Highschooler loved it - My aspiring 16year old astronomer thought this was really cool. Review: Better Quality than expected - Got it as a gift for someone who's a physics undergrad student for VDay and he loved it. He couldn't wait to get it in his wallet. It is in fact, metal. I was expecting a thin piece of metal, that it would bend or snap easy but it's actually pretty sturdy. I was a bit worried about the size being too big for his wallet but it fit perfectly. The text is a bit small, but there's a lot of information crammed on both sides. ## Features - Credit Card-Sized Multitool for Physicists: This stainless-steel laser-cut pocket tool includes a straight-edge ruler, protractor, and a compass. From Physics 101 to PhD lab work, it’s the ultimate at-work companion. Metric or inches? No problem. Draft theories, calculate results, and save time! Perfect for students, professors, physics majors, and AP Physics teachers. Surprise your boyfriend, dad, or gadget-loving friends with a unique gift. Also an ideal stocking stuffer or graduation gift! - Packed with Physics Reference Info: Never look up a basic physics equation, physical constant or unit conversion again. This stainless steel card isn’t just a simple tool—it’s a knowledge hub. Imagine having essential physics references at your fingertips. Whether you’re a student, scientist, or curious mind, this card eliminates the need to search for basic equations or constants. No more frantic Google searches or flipping through textbooks. Need Planck's constant? The mass of a proton? Done. - Ready to Draw Your Newest Idea: Genius can strike at any moment. Always be ready to take action on your ideas with precise measurements, dimensions checks and important equations. Perfect for equation proofs, quick calculations and sketching out new theories. The straight edge is both metric and English units. The protractor measures has 5 degree accuracy and the compass lets you draw arcs in half centimeter or quarter inch increments! - Thoughtful and Practical: Reference info stays useful for a long career. Give a professional, student or budding young engineer a unique, thoughtful and practical gift for homework to cutting-edge research. So, whether you’re measuring the speed of light, collaborating on cutting-edge experiments, or sketching out quantum theories, this gift is more than a tool—it’s inspiration. Ideal for physics majors, physics teachers, and a corporate employee gift for professional physicists. - Lasts a Lifetime: The laser-etched solid stainless steel ruler, laser-cut protractor, and the laser-engraved reference info lasts forever. Whether you’re a seasoned scientist or a curious astrophysics student, From late-night study sessions to advanced lab work, it’s your trusty sidekick. This card thrives in the messy, unpredictable world of research, experiments, and everyday life. So, whether you’re measuring the cosmos or sketching out, this stainless steel card is here for the long haul. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09WKPXXRL | | Best Sellers Rank | #728,970 in Fashion ( See Top 100 in Fashion ) #5,005 in Men's Wallets | | Brand | Genius Lab Gear | | Brand Name | Genius Lab Gear | | Color | Black | | Colour | Black | | Customer Reviews | 4.8 out of 5 stars 74 Reviews | | Global Trade Identification Number | 00860004040354 | | Graduation Range | 1/32 Inches | | Graduation range | 1/32 Inches | | Item Dimensions L x W | 8.4L x 5.3W centimeters | | Item Weight | 0.5 Ounces | | Manufacturer | Genius Lab Gear | | Material | Plastic | | Material Type | Plastic | | Model | TPP001 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | TPP001 | | Product dimensions | 8.4L x 5.3W centimeters | | Style | Modern | | Style Name | Modern | | Unit Count | 1 Count | ## Product Details - **Material:** Plastic - **Brand:** Genius Lab Gear - **Colour:** Black - **Style:** Modern - **Graduation range:** 1/32 Inches ## Images ![Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies - Image 1](https://m.media-amazon.com/images/I/81tDqW5KjvL.jpg) ![Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies - Image 2](https://m.media-amazon.com/images/I/811vyXElQNL.jpg) ![Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies - Image 3](https://m.media-amazon.com/images/I/81f6kPYZjFL.jpg) ![Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies - Image 4](https://m.media-amazon.com/images/I/81tgTr2bWvL.jpg) ![Genius Lab Gear The Pocket Physicist - Wallet Ruler and Unit Conversion Reference for Physics College Students and PhD Graduates - 3 inch Homework Helper STEM School Supplies - Image 5](https://m.media-amazon.com/images/I/81O0tk+xV-L.jpg) ## Questions & Answers **Q: Why do Physicists and Physics Majors need this?** A: Physics lovers do quick calculations and sketches of their theories and homework. With this multitool, they can skip distracting internet searches for constants and unit conversions, plus the drafting tools lets them sketch quickly and accurately! **Q: What writing instruments can you use with this multitool?** A: The precision-cut compass and protractor cutouts are designed to accommodate most 0.7mm pens, pencils, and smaller writing tools. You won’t have to worry about slicing your pencil lead while using it. **Q: How does having physics reference info directly on the tool save time?** A: The multitool’s design cleverly embeds crucial physics data—such as standard equations, physical constants, & unit conversions—directly onto its surface. You can instantly reference values like Planck’s constant without halting your workflow. **Q: What distinguishes this multitool as a thoughtful gift for both students and seasoned professionals?** A: The multitool isn’t just a gadget; it’s a compact physics lab in your pocket. For students & professors alike, this tool offers immediate access to measurement instruments & reference information that fuels learning & research. **Q: Can this tool withstand the everyday rigors of scientific work and last a lifetime?** A: Made from robust, laser-etched stainless steel, the multitool is engineered for longevity. The ruler, protractor, & reference info—are ensured they remain legible & intact, whether you’re in a hectic lab environment or at late-night study sessions. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Highschooler loved it *by L***S on 27 December 2024* My aspiring 16year old astronomer thought this was really cool. ### ⭐⭐⭐⭐⭐ Better Quality than expected *by R***. on 3 February 2026* Got it as a gift for someone who's a physics undergrad student for VDay and he loved it. He couldn't wait to get it in his wallet. It is in fact, metal. I was expecting a thin piece of metal, that it would bend or snap easy but it's actually pretty sturdy. I was a bit worried about the size being too big for his wallet but it fit perfectly. The text is a bit small, but there's a lot of information crammed on both sides. ### ⭐⭐⭐⭐⭐ Great present *by M***D on 28 September 2025* Really cool present for my fellow physics teachers. Nice size and very good quality ## Frequently Bought Together - The Pocket Physicist - Small Metal Physics Metric Ruler Scale, Gadget Multi-Tool, Techie/Geeks/Nerds Cool STEM Tech Student Graduation Gift, Unique College Homework Mini 3 Inch Tool - Genius Lab Gear - The Authentic Pocket Engineer - Small Metal Engineering Ruler Protractor Compass Scale, Techie Graduation Gadget Multitool, Mechanical/Civil Engineers Gift, Metric Mini 3 Inch Tool- Genius Lab Gear - The Pocket Scientist - Small Metal Science Ruler Scale, Cool Tech Gadget Mini Multitool, Unique Techie/Geek/Nerdy STEM College Student Graduation Gift, 3 Inch Metric Imperial Tool Kit- Genius Lab Gear --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/447968854-genius-lab-gear-the-pocket-physicist-wallet-ruler-and-unit](https://www.desertcart.pt/products/447968854-genius-lab-gear-the-pocket-physicist-wallet-ruler-and-unit) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-10*