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The Pocket Engineer - Wallet Ruler and Conversion Reference

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

Packed with features in laser-cut stainless steel the size of your credit card:

  • 26 unit conversions, 7 equations, and 10 physical constants to save you time looking up references in mechanical, civil, electrical, industrial, nuclear, and materials engineering.
  • Doubles as a wallet ruler and protractor.
  • Photogrammetric ruler to calibrate length and tilt in images when used as a scale in field or lab work.
  • Pipe inner diameter measurement from 0.25"-1.25" and machinist scale with 10-mil resolution.
  • Here's how to use me!


Shipping times & rates

We ship to Canada, the UK, EU and many other countries around the world. Go to checkout to see the rates and availability for your region.

Still not sure if you want one? We offer free returns of this product within 30 days of purchase if you're not happy with it! Grab it today with no risk and feel the difference yourself.

Bulk Orders

Bulk classroom discounts and group/logo customization are available by request. Bulk pricing starts at 10 cards and custom logos start at 100 cards.



Customer Reviews

Based on 56 reviews
96%
(54)
2%
(1)
0%
(0)
0%
(0)
2%
(1)
P
Pauline O’Rorke

Did not arrive sadly. Very disappointed

J
Jose Acosta
Love it

Great!

D
Donovan Baca

Great tool

J
Jessica C
Amazing!

These tools are really well made and were a huge hit with engineering students and professionals alike. Would definitely purchase from Genius Lab Gear again!

S
Sebastian Ledesma

The Pocket Engineer - Wallet Ruler and Conversion Reference

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3,454kg
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That's like...
8840
miles driven by an average gasoline-powered car