Collins Gem Ready Reference (Collins Gems)

This compilation of information about the world of measures covers such topics as shoe sizes, gun bores, longest rivers, the size of the universe, compound interest and life expectancy. The main subjects covered are length, area, volume and cubic capacity, weight, energy, temperature, time, velocity, astronomy and features of the Earth. The book also includes tables that provide a quick reference for such conversions as Arabic to Roman figures and imperial to metric measures.