*Some regions of the USA and world are still experiencing shipping delays due to COVID-19.

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The Pocket Engineer - Wallet Ruler and Conversion Reference

Regular price $11.50 Sale

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.
  • Doubles as ruler, arc drawing and angle measurement tool.
  • 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.

Free shipping, free returns. 

Free shipping in the USA! Typically arrives in 5-15 days in the USA, 15-30 days internationally. Expedited shipping available for less than $2 in USA.

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 classroom discounts and group customization available by request

Customer Reviews
5.0 Based on 5 Reviews
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United States United States
Excellent Pocket Tool

I install high end window treatments and needed something small to use when measuring in small tight spaces. I also use it to slide the pin side of roller shades into place when it's a tight fit. The quality, etched letters/numbers, and precise ruler make it an excellent tool for my trade. It slips into my wallet like a credit card which makes it easy to carry and find. Highly recommended!

David T.
United States United States
Unique and Useful; Great Gift, too.

I really feel that Genius Lab Gear cares about its customers. Their products (I purchased all 4 of the Wallet Tools) are of the highest craftsmanship and they are ready to respond to any questions or concerns one might have. The checkout went smoothly and the product arrived quickly and in perfect condition. I highly recommend this company and will buy from them again.

United States United States
Great for all engineers!

I got one of these for a civil engineer and another one for a biomedical engineer. They both really liked the gift and found all the features super helpful!

Maxwell L.
Canada Canada
Great product, really fun

It fits right into my wallet, and has a satisfying weight. The notations and constants are useful, and its just overall a fun item! Well worth the price.

United States United States
My brother loved it!

I got this as a Christmas gift for my brother, who is an engineering student with a current internship. He absolutely loved it! He told someone else it was his favorite gift this year. He's excited to have so many tools and constants available in his pocket when he's at work or doing homework. Quality is great too--super durable and legible. I may have to order the Pocket Scientist for myself as a fieldwork tool.