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Pocket Engineer - Authentic Small Metal Engineering Ruler Protractor Compass Scale, Techie Stocking Stuffers Gadget Multi-tool, Mechanical/Civil Engineers Gift, Metric Mini 3 Inch Tool-Genius Lab Gear

4.6 (10) Write Review
Free shipping on orders over $29.99

$12.96

$ 6 .99 $6.99

In Stock

About this item

  • Credit Card-Sized Multitool for Engineers: This stainless-steel laser-cut pocket tool includes a straight-edge ruler, protractor, and a compass. From lab work to DIY projects, it’s the ultimate at-work companion. Metric or inches? No problem. Draft blueprints, calculate angles, and create precise drawings. Perfect for students, professors, engineers, and mechanics. Surprise your boyfriend, dad, or gadget-loving friends with a unique gift. An ideal stocking stuffer graduation gift.
  • Packed With Engineering Reference Info: Never look up a basic engineering equation, physical constant or unit conversion again. It’s not just a ruler; it’s your quick-reference while in the field or on the job. Architects, carpenters, and electricians—slip it into your pocket to save time looking up conversions! It’s the ultimate tool for measuring, drafting, and fixing anything. A helpful, handy gadget for the cool dads, boyfriends, women engineers, or hobbyist husband who loves to tinker!
  • For Precision Technical Drawings: Always be ready to take a quick measurement or sketch a new design accurately with the ruler, protractor and compass drawing tools. From construction sites to woodworking benches, this stainless-steel multitool is your centimeter, millimeter, mils and inches ruler with angular precision of 5 degrees. A must-have for engineering, architects, machinists, draftsmen, field engineers and practical nerds! Be quick to measure, cut, and work with precision.
  • Never Outgrow It: 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. Ideal for tech-savvy students, teachers, and DIY enthusiasts. The perfect desk accessory and EDC gift for civil, mechanical, and electrical engineers. In the lab or the job site, surprise your boyfriend, dad, mom, lab mate or favorite engineer with something they will keep for years.
  • Lasts for a Lifetime: The laser-etched solid stainless steel ruler, laser-cut protractor, and the laser-engraved reference info lasts forever. Whether you’re converting inches to millimeters, PSI to Torr, or measuring angles, it's an every-day carry pocket companion for a lifetime. Essential for ingenieros and ingenieras with both English and Metric system conversions! Surprise your engineering employees, manufacturing team, or quality control staff with an awesome corporate gift!


Product Description

Always be ready to measure, calculate, and fix anything with The Pocket Engineer

pocket engineer wallet ruler tool edc essentials school supplies gifts college student engineering

The Pocket Engineer is a wallet ruler and conversion reference that's an every-day carry tool designed for engineers. We've packed as many handy tools and references as possible into this little laser-engraved and laser-cut stainless steel card to make your technical work a little easier every day.

A Textbook In Your Pocket - A small compact 3 inch form factor in your wallet

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

This stainless steel card is packed with reference information for engineers including unit conversions, equations, and physical constants. It's also a wallet ruler, protractor, compass, photogrammetric ruler, and pipe inner diameter measurement tool. A versatile tool for professionals and students!

The Pocket Engineer - More than a ruler

You'll have a textbook at your fingertips without a clumsy 12 inch ruler

We designed every single aspect of The Pocket Engineer to make it as functional and long-lasting as possible. Packed with every-day essential reference info. The laser-engraved unit conversions and engineering equations will save you time and keep you working on your craft instead of searching the internet or old textbooks for the exact numbers.

A perfect gift for an engineering student going off to college, an engineer's graduation, a passionate machine shop teacher or a professional engineer.

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Laser-cut stainless steel allows a 3 inch ID-size form factor to last a lifetime

Reference Information Includes 26 unit conversions, 7 equations, and 10 physical constants relevant to mechanical, civil, electrical, industrial, nuclear, and materials engineering.
Measurement Tools Doubles as a wallet ruler, compass, and protractor.
Photogrammetric Ruler Used for image calibration, measuring length, and tilt in field or lab work.
Pipe Inner Diameter Sizing Measure pipes and tube inner diameters from 0.25" to 1.25" wide.
Compact Design Sized to fit standard credit cards or IDs for everyday carry (EDC), while meeting TSA guidelines.
Durability Constructed from 0.5 mm thick laser-cut enamel-coated stainless steel. Laser-engraved information won't wear off.
Timeless Gift Suitable for professionals, students, and engineers - from homework assignments to cutting-edge research.

  • 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.

  • 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.

  • 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.

  • It includes a ruler, protractor, and angle drawing tools, making it handy for quick measurements and accurate sketches.

  • 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.


Technocrat
2025-08-19 16:07:40
This basic low-tech gadget has been great for me with the tasks I've needed it for: most-routinely taking small measurements of 3" or less, as an alternative to keeping a bulky tape measure on my belt (or in my pocket), causing my pants to 'droop' and/or my shirt to become untucked. The square corners are of course functional for measuring purposes, but are a risk of pocket-wear, depening on how one stores it. I use my wallet, or keep it in a small stack of other things, in my shirt pocket.I keep it in the included cardboard sleeve, and also in the included inner, clear-plastic sleeve. This is a bit 'fussy' trying to keep track of both the cardboard sleeve and the plastic sleeve, and trying to keep them 'nice'... in my routine tasks, I routinely have dealt with oil-covered metal, so gets a bit messy/problematic, especially when trying to put the card back in all the sleeves, lol.It would be a useful improvement, to have a single, durable plastic sleeve,of course only very slightly larger than the 'measuring-card' itself,i.e. with rounded corners, to improve 'stowability'Either way I like it and it has saved me the trouble of having to carry around a much bulkier tape measure.
idk
2025-08-15 16:36:56
This was a perfect gift for my engineer husband. It is slim, sturdy, and handy. He loved it and keeps it in his wallet. He like it so much he ordered more for his friends. (Doubles as a box opener)
Angie
2025-08-11 11:57:37
Bought for an engineer as a gift. Grok recommended when I asked for advice. He's really happy with it!
Rae
2025-07-14 16:02:13
Bought this as a gift. Readable, durable and well designed and made. Also a QR for scanning for more STEM knowledge.
Y. B.
2025-07-13 14:23:07
I like most things about it, but the protractor was one of the main ones I was interested in it for... and it is one of the worst parts. The design has two weak pieces of metal holding the center part onto the rest of the card, and it easily bends out of place. I'm sure it will also easily break off. And I get that they were trying to make use of as much surface area as possible, but making a larger hole in the center of the protractor (or using a series of overlapping slots) and centering the protractor on the card to move it further from the edges would have made it far sturdier. And it also would have enabled making it larger, which would have made it much more accurate and precise.
Pharbor
2025-05-06 15:29:41
This is a nice gadget to have in your wallet. It's about the size of a credit card/license, made out of stainless (I think) and comes in a cardboard sleeve. It's ruled along two long edges in inches and centimeters, with a protractor along one of the shorter edges and conversion factors in the body of the card. The other side has a bunch of constants and formulae. Very useful!
John
2025-04-19 14:48:40
Was a gift to high school engineering student. I see her use it often. For reference, and it also comes in handy for opening boxes. A multi-functional tool. I think it is well made.
JPR
2025-04-18 15:56:18
A great little ruler, easy to read. About the size of a credit card will fit in a wallet. On the back are a great many constants and formulas. Finally it looks cool even if you’re using it as a straight edge to just underline something.
Christine
2025-04-01 12:40:30
Got this as part of a gift, he loved it! Very versatile and easily fits in wallets. Great idea.
Adi
2025-02-03 12:46:11
Nice and compact. Bought 2 one for me and one for my engineering student child!!