Private employers & public agencies use various mechanical aptitude tests to screen applicants for jobs that range from mechanics & skilled trades apprentices to aerospace engineers & fire-fighters. These tests often differ in detail but measure similar abilities. This manual presents 18 typical tests that gauge an individual's mechanical aptitude & spatial ability with all questions answered & explained. The author also advises on ways to improve mechanical comprehension gives test-taking tips & explains how pulleys levers & other simple machines work. The book is filled with diagrams & illustrations.