This is the third edition of a book which has consistently fulfilled its aim of making a low-priced collection of tables available to the student and practicing engineer. In the second edition all parameters were made non-dimensional. This new edition now includes and additional table of Isentropic flow; it is hoped that this inclusion will significantly increase the range of application of the book's data. This is a low-priced collection of tables available to the student and practising engineer. It now includes a table of Isentropic flow, therefore increasing the range of application of the book's data.