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 Expert  722773

Expert in Geometric Dimensioning & Tolerancing, Design for Manufacturability, Tolerancing Optimization, etc.

Available for your Consulting and Expert Witness Needs

Minnesota (MN)
Education Work History Career Accomplishments Consulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert has over 30 years experience in the aerospace, defense and commercial industries with extensive expertise in the mechanical and precision engineering fields as an engineer, manager, consultant, educator and author with tremendous emphasis on geometric tolerancing. He is a recognized leader in the dimensional tolerancing and physical metrology fields. Expert has extensive technical society affiliation and recognized worldwide as chairman and member of U.S. committees as well as U.S. representative on international standards development in the areas of physical metrology, dimensional tolerancing and uncertainty analysis, with emphasis in the sub-micrometer regime. Expert is a member of U.S. Technical Advisory Group (TAG) to the International Organization for Standardization "ISO/TC213" on the subject of geometric tolerancing, physical metrology, and uncertainty analysis. He is actively involved as a member and chairman of applicable U.S national standards covering the scope these same above topics. Expert notes that dimensional tolerancing covers the full scope of geometric dimensioning and tolerancing per the ASME Y14.5 Standard and associated ISO 1101 and supporting ISO standards, mathematization of dimensional tolerancing Principles per the ASME Y14.5.1 Standard, 3D modeling per the ASME Y14.41 Standard and functional gaging per the ASME Y14.43 Standard. He further notes that physical metrology covers the full scope of physical measurement of discrete parts in support of all industries. His measurement expertise encompasses everything from: surface plate measurement; hand tools; the broad scope of coordinate measuring machines (CMMs), both contact and non-contact; white light interferometry, etc. Expert is a member of the ASME B89 Consensus Committee responsible for standardization of physical measurement practices. He is Chairman of ASME B89.7, which is the committee responsible for development of standards and technical reports targeted to aid industry in the integration and critical analytical tools covering the scope of uncertainty analysis. Expert notes that, given the state of global technology and growing technological constraints, such as miniaturization and tolerance truncation, the world requires higher precision in engineering modeling and analytical tools and the critical need to expand current knowledge and principles within all engineering disciplines. Based on this critical and global need, Expert consults in the areas of corporate technology forecasting, advanced measurement development, advanced mechanical design and modeling techniques, physical measurement strategies, uncertainty analysis, employee development planning, external technology development collaborations, analysis, and recommendations based on technology trends.

geometric tolerancing


coordinate measuring machine


Canadian Standards Association standard


design engineering




contour measurement


dimensional metrology


International Organization for Standardization


measurement standard




optical measurement

Expert has extensive expertise in mechanical tolerancing optimization to ensure the maximum allocation of tolerancing resulting in significant cost reductions in manufacturing and inspection. Design for manufacturability, design for assembly, and design for inspectability have all been key focused efforts of his, with high-volume and low cost being direct beneficiaries. A critical tool he has used in these optimization efforts is statistical tolerance analysis, which encompassed translational as well as rotational stackup considerations with many inherent influencing factors considered. He has spent years consulting and teaching engineers in all industries how to complete tolerance stack up analysis and take into consideration historical knowledge of process capability information on applicable like-type processes.

design for assembly


design for cost


design for manufacturability


design for manufacture and assembly


high volume, low cost product assembly


high volume, low cost product design


product design variation reduction


statistical tolerance analysis

Expert is actively involved with the development of a national standard (ASME Y14.43) on "Dimensioning and Tolerancing Principles for Gages and Fixtures." For many years he was directly responsible for measurement laboratories and quality systems. He researched, tested, purchased, and integrated measurement equipment to support in-process and final inspection areas. He developed inspection and calibration procedures in support of laboratory and manufacturing environments as well as supported applicable training to ensure positive integration. He has in-depth expertise designing functional gaging (variable and attribute) for component and assembly feature characterization.





instrument calibration


measurement process


measurement system


metrology laboratory


metrology software


product testing


quality control

Expert was responsible for managing metric integration within a major U.S. corporation, and has consulted for project managers at various companies throughout the world to aid them in their metric integration efforts.

metric system


manufacturing standard

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Minneapolis, Minnesota;  Saint Paul, Minnesota;  Rochester, Minnesota;  Burnsville, Minnesota;  Saint Cloud, Minnesota;  Eden Prairie, Minnesota;  Minnetonka, Minnesota;  and Eau Claire, Wisconsin.

Year   Degree   Subject   Institution  
1991   B.S.   Engineering Management   Pacific Western University  
1993   M.S.   Engineering Management   Pacific Western University  
1995   Ph.D.   Engineering Mangement   Pacific Western University  

Work History:
Years   Employer   Department   Title   Responsibilities

2001 to







Expert is owner, developer, consultant, and trainer.

1990 to 2001


Hutchinson Technology Inc.




Manager, Corporate Standard & Measurement Science


He managed the research and development of measurement science activities in the physical metrology arena. Also managed all corporate standards development initiatives in the dimensional tolerancing and physical metrology areas. He provided national and international representation on related technical standards development.

1985 to 1990


VER-SA-TIL Associates, Inc




Principal Quality Engineer


1982 to 1985


DLS Industries



Quality Engineering Manager


1980 to 1982


Eggum Industries



Quality Control Manager/Technical Engineer


1978 to 1980


Raush Manufacturing



Manufacturing/Quality Engineer


1974 to 1978


White Mobilift





Career Accomplishments:

Expert has the following technical affiliations: ASPE, ASME H213; U.S. TAG ISO/TC213; ASME B89.7; ASME Y14.5; ASME Y14.5.1; ASME Y14.5.2; ASME B89; and ASME B89.4.

Professional Appointments

He is Chairman of the U.S. National Standards Committee (ASME B89.7) on Measurement Uncertainty.

Consulting Services:
Recent Client Requests:
  • Expert for consulting on review of a machined casting print on a threaded feature
  • Expert in statistical tolerance analysis for consulting on parabolic dish tolerance.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Expert in interpretation of engineering drawings.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

Additional Skills and Services:

Expert has taught introductory and advanced courses on GD&T (geometric dimensioning and tolerancing); basic blueprint reading; tolerance analysis; uncertainty analysis; GD&T for inspectors using surface plate measurement equipment and had tools; and GD&T for CMM programmers.


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