This book is the 27th edition of Gieck's Technical Formula Collection, a comprehensive reference guide for engineers and technicians. This edition includes over 50,000 formulas and equations covering a wide range of engineering disciplines. It's an invaluable resource for anyone working in the fields of mechanical engineering, electrical engineering, civil engineering, and more. The book is also a great resource for students, hobbyists, and anyone interested in learning more about the technical world. This particular version celebrates the 50th anniversary of the book's publication and includes a wealth of practical information for engineers, technicians, and students. This book is an essential resource for anyone who needs quick and easy access to technical formulas and equations.