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Always be ready to measure, calculate, and fix anything with The Pocket Engineer
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.
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Fits with your credit cards
Sized like a credit card or ID for stealthy every-day carry in your wallet for field or lab work.
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You'll always be ready for anything in the field
Used by civil, mechanical, nuclear, and materials engineers on the job for quick questions.
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Measure inner diameters (ID) up to 1.25 inches
Insert corner vertically and measure pipe or tube diameters with 1/8th to 1 1/4" openings.
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Perfect for failure analysis or field samples
Laser-etched high-contrast metric scale shows brightly in an image to set the pixel:length ratio.
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Packed with every-day essential reference info
Save time on homework for common temp, pressure, power, mass and length unit conversion on the back.
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.
Angie
Reviewed in the United States on January 7, 2025
Bought for an engineer as a gift. Grok recommended when I asked for advice. He's really happy with it!
Technocrat
Reviewed in the United States on June 12, 2024
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.
Pharbor
Reviewed in the United States on May 23, 2024
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
Reviewed in the United States on February 7, 2024
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.
Y. B.
Reviewed in the United States on November 20, 2024
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.
Adi
Reviewed in the United Kingdom on October 21, 2024
Nice and compact. Bought 2 one for me and one for my engineering student child!!
Rae
Reviewed in the United States on January 25, 2024
Bought this as a gift. Readable, durable and well designed and made. Also a QR for scanning for more STEM knowledge.
idk
Reviewed in the United States on January 12, 2024
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)
Christine
Reviewed in Canada on October 4, 2023
Got this as part of a gift, he loved it! Very versatile and easily fits in wallets. Great idea.
JPR
Reviewed in the United States on March 29, 2022
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.
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