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 actually incredibly cool - even if you have a smart phone, wear a pair of Google glass, have read all of Wikipedia, etc. It's 864 pages of comprehensive tables, maps, formulas, constants, conversions, everything! There are knot tying diagrams, pictures of airplane signals, the dictionary of American sign language, spice scales for hot peppers - the list goes on and on and on.