The Car Maintainer, Group B Passbook ® prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: Machine shop machinery, including lathes, milling machines, boring mills, shapers, drill pressers and surface grinders; Machinist tools, including measurement devices such as micrometers, calipers, pyrometers and dial indicators; Job-related mathematics; and more.