Football Mechanics Illustrated is the only High School mechanics book to combine crews of 4 & 5 with detailed image. Referee’s exclusive MechaniGram® graphics give you precise locations and movement guidelines for every type of play situation. By studying this easy-to-read yet in-depth resource, you’ll be able to be in the right place at the right time, every time, to make the right call. Every image from the book is included on a CD-ROM that you can use in your PC or laptop at home or up on screen at an association meeting, making it the perfect tool for training and instruction.