Fly through your Engineering homework and always be ready to fix anything with The Pocket Engineer.

This stainless-steel laser-cut credit-card sized pocket ruler can reduce mistakes and save you time with:

1. 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.
2. Photogrammetric ruler to calibrate length and tilt in images when used as a scale in field or lab work.
3. Pipe inner diameter measurement from 0.25"-1.25" and machinist scale with 10-mil resolution. Doubles as a wallet ruler and protractor.

Material: Enamel-coated stainless steel
Dimensions Unpackaged:
LxWxH: 3.35"x2.25"x0.02"