This book deals with measurement units of all kinds and the way they relate in systematic ways to each other. Special consideration is given to their uses in physics, chemistry, and engineering, but all phases of life are covered.

This is the first of four volumes of the data files that were used to generate much of the data which are compiled in the book "The Johnson Solids and Their Duals." It has been provided for the assistance of others who might wish to perform their own study of the Johnson solids.

This is the second of four volumes of the data files that were used to generate much of the data which are compiled in the book "The Johnson Solids and Their Duals." It has been provided for the assistance of others who might wish to perform their own study of the Johnson solids.

This is the third of four volumes of the data files that were used to generate much of the data which are compiled in the book "The Johnson Solids and Their Duals." It has been provided for the assistance of others who might wish to perform their own study of the Johnson solids.

This is the last of four volumes of the data files that were used to generate much of the data which are compiled in the book "The Johnson Solids and Their Duals." It has been provided for the assistance of others who might wish to perform their own study of the Johnson solids.