Pocket Ref - 4th Edition - by Thomas J. Glover

Have you ever wanted comprehensive information on a diverse amount of subjects in a pocket sized, well-organized format and not had a cell phone signal or internet connection? Look no further! This pocket reference book is incredibly cool - even if you have a smart phone or have read all of Wikipedia. It contains 864 pages of comprehensive tables, maps, formulas, constants, conversions, knot tying diagrams, airplane signals, American sign language dictionary, spice scales for hot peppers, and much more.

Open to a random page to learn something new or use its comprehensive index to find exactly what you're looking for. Since 1989, this book has gone through numerous printings and refinements, now containing the best and most concise amount of information in a durable, pocket-friendly format.

Weighing about 200 grams and measuring 137mm x 81mm x 23mm (5.4" x 3.2" x 0.9"), it fits conveniently in your shirt pocket with a sturdy black cover.