If the only knots you know how to tie are your shoelaces and a necktie, then you need this book. Authors Geoffrey Budworth and Jason Dalton provide helpful hints on picking the right knot for the job, along with detailed instructions for tying 200 practical knots used in boating, hiking, fishing, climbing, and more.
Engineers, makers, and anyone else who works with circuits will love these pocket reference cards. The durable card set includes measurements, schematic symbols, a component value calculator, SMD footprints, laws and theories, and more. It comes in black and gold or a Kickstarter limited-edition PCB green.
This series of infographic posters offer an artful presentation of useful knowledge at a glance. Etsy seller Christie Gift Shop carries them in a variety of designs, including carpentry, photography, scuba diving, golf, scouting, quilting, and more. They’re available in 12″ x 18″ and 16″ x 24″ sizes, unframed.
While Google is our go-to for many answers, we still keep a copy of Thomas Glover’s Pocket Ref on hand. It’s loaded with more than 850 pages of reference tables, formulas, constants, and conversions, and is one book we’d want in our bug-out bag if the internet ever blew up. The larger Desk Ref has 1280 pages.
Ever thought about what might happen if we lost everything and had to rebuild the world from scratch? This 400-page book is designed as a reference to give our society a fighting chance, with illustrations and information on everything from vehicles to shelters to medicines and agriculture. Available in digital or print editions.
Whether you’re a DIYer or a construction pro, understanding math and geometry is critical. DEWALT’s reference guide includes 42 pages of useful equations and rules which will help you measure twice and cut once. Made from durable, toolbox-friendly materials with a spiral-bound edge. Also available for plumbing and wiring.
Originally published back in 1953, Hervey Garrett Smith’s book The Arts of the Sailor: Knotting, Splicing and Ropework is a great reference for mariners of all experience levels to learn about shipboard skills, along with detailed illustrations and directions for working with rope and tying various useful knots.
This unique deck of playing cards isn’t just fun and games, it’s packed with useful knowledge about photography. Each suit is dedicated to a theme: Spades are camera basics, Hearts are composition, Clubs are technical, and Diamonds are shooting styles. They come with a black back, or a limited-edition Kickstarter green.