Measurements and Conversions is an indispensable guide to units and numbers, from shoe sizes to the longest rivers, from compound interest to life expectancies.Here you'll find facts and figures about length, area, volume, weight, energy, temperature, time, space, and features of the earth, with quick-reference conversion tables and more than 150 clear line drawings.Each Running Press Gem is a treasure of information - fascinating, compact, and invaluable.