Written by one of the foremost authorities in the field, this reference presents proven and useful methods for determining whether selected dimensioning and tolerancing schemes will yield functional parts and assemblies. It also tells the most practical procedure to communicate the results.
―Mechanical Engineering, Vol. 126, No. 11, Nov. 2004

Bryan R. Fischer is owner of Advanced Dimensional Management LLC, which provides consulting and training in GD&T, tolerance analysis, dimensional management, 3D model-based engineering, and related fields, including 3D MBD and MBE, product documentation quality, and engineering standards. Mr. Fischer is recognized as a leading expert with more than 25 years of industrial experience in these areas. Having worked as a GD&T expert, tolerance analyst, dimensional management engineer, and design lead, he has also been a designer, checker, design drafter, and CAD systems programmer, as well as a trainer and consultant in the areas of GD&T, drawing quality, dimensional management and tolerance analysis.

He trains and consults in many industries, both commercial and government, with companies ranging from very small to the largest multi-national corporations. He has consulted with inspection and CAD software developers to help them improve their implementations of GD&T, 3D PMI, and model-based product definition practices. He also works with companies around the world helping them to understand and implement 3D model-based product definition and model-based enterprise methods. Bryan has been active in the area of corporate, national, and international standards development and standards management throughout his career, and a longtime member of several standards development committees.