This text-workbook/answerbook explains the process of Tolerance Stack-Up Analysis for assemblies using both plus and minus and geometric tolerances. It explains pertinent aspects of Geometric Dimensioning and Tolerancing, then proceeds to teach a sound, logical, mathematically-reliable methodology for calculating tolerance stack-ups. This text is comprehensive, yet very easy to understand and follow from lesson to lesson. This second edition is easier to understand, includes more discussion on what can go wrong, shows how to tell right from wrong stack-up routes, includes more on statistical analysis, reads smoother and adds information that eases the learning process. The terminology in this revision has been updated to comply with ASME Y14.5-2009. It contains some color illustrations, including models of assemblies. This text also makes a tremendous reference resource. For self-study or classroom use.