---
product_id: 413615775
title: "Genius Lab Gear The Pocket Engineer - Wallet Engineering Ruler Scale and Unit Conversion Reference 3 inch"
brand: "genius lab gear"
price: "¥6536"
currency: JPY
in_stock: true
reviews_count: 5
category: "Genius Lab Gear"
url: https://www.desertcart.jp/products/413615775-genius-lab-gear-the-pocket-engineer-wallet-engineering-ruler-scale
store_origin: JP
region: Japan
---

# 3-inch stainless steel ruler Protractor & angle drawing tools 10 physical constants & 7 equations Genius Lab Gear The Pocket Engineer - Wallet Engineering Ruler Scale and Unit Conversion Reference 3 inch

**Brand:** genius lab gear
**Price:** ¥6536
**Availability:** ✅ In Stock

## Summary

> 📐 Engineer your edge—carry genius in your wallet!

## Quick Answers

- **What is this?** Genius Lab Gear The Pocket Engineer - Wallet Engineering Ruler Scale and Unit Conversion Reference 3 inch by genius lab gear
- **How much does it cost?** ¥6536 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/413615775-genius-lab-gear-the-pocket-engineer-wallet-engineering-ruler-scale)

## 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

- • **Exclusive Bonus Access:** Scan the QR code for monthly bonus content and hidden discounts—join the elite community of engineers who never stop upgrading.
- • **Wallet-Ready Precision:** Fits perfectly in your credit card slot for stealthy, everyday carry—always be ready to measure or convert on the go.
- • **Multi-Functional Design:** Includes photogrammetric scale, imperial & metric rulers, angle measurement, and pipe diameter tools for versatile field and lab use.
- • **Built to Last a Lifetime:** 0.5 mm laser-cut, enamel-coated stainless steel ensures durability that outperforms plastic and ink-printed rulers.
- • **Instant Engineering Reference:** Packed with essential physical constants, unit conversions, and quick equations—ditch your phone, stay efficient.

## Overview

The Pocket Engineer by Genius Lab Gear is a TSA-compliant, 3-inch stainless steel engineering ruler designed to fit in your wallet. It combines precision measurement tools, essential physical constants, unit conversions, and angle drawing features in a durable, enamel-coated metal card. Perfect for engineers, students, and professionals, it offers instant technical reference and exclusive bonus content via QR code, making it an indispensable everyday carry for field and lab work.

## Description

Every Day Carry (EDC) gear for passionate engineers.Tech enthusiasts, engineers, mechanics and makers around the world finally have a pocket tool for solving their every-day technical problems.What sets The Pocket Engineer apart? - The silky smooth matte black enamel finish gently fillets the laser-cut edges which makes it a pleasure to handle in the field, ensuring it won’t carve into your pencil lead. - The surprisingly massive stainless-steel feel helps secure it in windy conditions unlike a plastic card or ruler. - Laser-engraved markings and text are guaranteed to not rub off like other ink printed rulers.What features did you pack into this little pocket tool?1) Solid metal 3 inch design that fits in your wallet and is TSA compliant when traveling for field work.2) Photogrammetric ruler for calibrating scale and tilt in field or lab images.3) 10 physical constants and 7 fundamental equations from physics and engineering.4) Temperature, pressure, mass, length and power conversions plus trigonometry quick reference.5) Imperial and metric straight-edge to 85 mm and 2" ruler with 10-mil resolution. 6) Angle measurement and drawing tool with 5 degree resolution.7) Fractional inch to decimal inch quick reference to 1/16th inch resolution 8) Pipe/tube inner diameter measurement using corner to 1.25 inch maximum.9) Arc and circle drawing protractor tools with 1/8th inch or 5 mm resolution.10) 42 digits of pi. Because we could.11) QR code links to monthly bonus content and discounts on a hidden GLG page.Who needs this?This is a perfectly thoughtful and unique gift for students, professionals or teachers in any engineering or mechanical field!Not sure if you’ll like it?You can return it within 30 days for a full refund if you don't love it! Seriously. Get it!

Review: Nice and compact. Bought 2 one for me and one for my engineering student child!!
Review: Muy práctica para llevar en la cartera.

## Features

- FITS WITH YOUR CREDIT CARDS: Sized exactly to a standard credit card or ID for stealthy every day carry in your wallet or money clip. Perfect for field work or lab work.
- PACKED WITH REFERENCE INFO: Never look up a basic engineering equation, physical constant or unit conversion again.
- EQUIPPED FOR TECHNICAL DRAWINGS: Always be ready to take a quick measurement or sketch a new design accurately with the ruler, protractor and angle drawing tools.
- NEVER OBSOLETE: Give a professional, student or budding young engineer a unique, thoughtful and practical gift that will stay with them for many years from homework to cutting-edge research.
- LASTS A LIFETIME: 0.5 mm thick laser-cut enamel-coated stainless steel built for a lifetime of use and abuse.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08M5SNYKZ |
| ASIN  | B08M5SNYKZ |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #64,814 in Office Products ( See Top 100 in Office Products ) #352 in Rulers |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (604) |
| Customer reviews | 4.7 4.7 out of 5 stars (604) |
| Date First Available | 16 April 2021 |
| Date First Available  | 16 April 2021 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 30 g |
| Item model number | TPE001 |
| Item model number  | TPE001 |
| Manufacturer | Genius Lab Gear |
| Manufacturer  | Genius Lab Gear |
| Material | Stainless Steel |
| Measurement System | Inch |
| Part number | TPE001 |
| Product Dimensions | 8.41 x 5.31 x 0.25 cm; 30 g |
| Product Dimensions  | 8.41 x 5.31 x 0.25 cm; 30 g |
| Size | 3 Inch |
| Style | functional |

## Product Details

- **Brand:** Genius Lab Gear
- **Colour:** Black
- **Graduation range:** 1/16 Inches
- **Material:** Stainless Steel
- **Style:** functional

## Images

![Genius Lab Gear The Pocket Engineer - Wallet Engineering Ruler Scale and Unit Conversion Reference 3 inch - Image 1](https://m.media-amazon.com/images/I/61yczeuKpFL.jpg)

## Questions & Answers

**Q: What is the purpose of this stainless steel card?**
A: It serves as a practical tool for engineers and makers as an everyday carry gift, fitting in your wallet or money clip alongside credit cards or IDs.

**Q: What reference information does it contain?**
A: It includes basic engineering equations, physical constants, and unit conversions that would normally be in the cover of a textbook. No need to grab your distracting phone while doing homework on on the job site.

**Q: How durable is this card?**
A: It's entirely stainless steel and laser etched black enamel, so it won't wear down. The 0.5 mm thick laser-cut stainless steel can be bent with enough force but can easily live in your wallet or notebook for many years.

**Q: What technical drawing tools does this card offer?**
A: It includes a ruler, protractor, and angle drawing tools, making it handy for quick measurements and accurate sketches.

**Q: Who would benefit from receiving this stainless steel card as a gift?**
A: Professionals, students, and budding engineers in civil, chemical, electrical, mechanical, materials, nuclear, and aerospace will appreciate this unique and practical gift that remains relevant from homework to cutting-edge research.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***I on 21 October 2024*

Nice and compact. Bought 2 one for me and one for my engineering student child!!

### ⭐⭐⭐⭐⭐ Review
*by D***O on 6 August 2025*

Muy práctica para llevar en la cartera.

### ⭐⭐⭐⭐⭐ Review
*by E***E on 26 December 2025*

Perfect size and very sturdy. Will be used daily for work

## Frequently Bought Together

- 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
- Stocking Stuffers for Adults- Gifts for Men, 9 in 1 Multitool Pen, Christmas Gift for Dad, Gifts for Him, Tool Gifts for Dad from Kids, Gifts for Husband, Boyfriend, Grandpa(Silver)
- BOSCH GLM100-23 100 Ft Blaze Laser Distance Measure, Includes 2 AA Batteries

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-07*