20The product is the “Engineering Formulas” textbook, 7th edition, authored by Kurt Gieck and Reiner Gieck. Published by McGraw-Hill Professional Publishing in 1997, this revised edition features a hardcover format and contains 572 pages of essential engineering formulas. With a compact size of 6 inches in length, 4.4 inches in width, and 1 inch in height, this textbook is a valuable resource for those studying in the field of technology and engineering. The authors provide practical information in English, making it a must-have for students and professionals alike.