IIGDT Newsletter March 2014
Understanding the Economic Benefits of Measurement Uncertainty

Financial InstitutionFinancial implications would be the high-risk associated with companies using gage repeatability and reproducibility (GR&R) as their sole basis for measurement systems analysis. This limited method of analysis is not capable of capturing the full magnitude of measurement error and biases induced by many influencing factors. Measured results must be repeatable and reproducible, but by itself can be both a technical and financial risk. It is easy to have measured results that are repeatably and reproducibly incorrect, as uncorrected biases are easily induced that can be many times larger than the GR&R numbers initially recognized by the metrologist.

Customers and suppliers already know when this is occurring, as one of the two following situations happens: Measurement data can look good -- it complies with specification requirements, but the parts do not work or properly fit, or measurement data can look bad -- it does not comply with specification requirements, but the parts actually do work.

We call this the Understanding the Economic Benefits of Measurement Uncertainty.

IIGDT seminars focus on training all disciplines on how to identify key error sources that influence less than optimal decisions.

IIGDT Seminar Series : March - June 2014
Minnesota Seminar Locations
Fargo, ND GD&T—Intermediate Principles
March 17-18, 2014  
Santa Clara, CA Executive Overview
April 7-11, 2014 GD&T—Intermediate Principles
  GD&T—Advanced Applications
Minneapolis, MN Intro to Mechanical Drawings & GD&T
May 12-7, 2014 GD&T—Intermediate Principles
  GD&T—Advanced Applications
Minneapolis, MN Introduction to Dimensional Metrology
June 2-5, 2014 Applied Dimensional Metrology
Minneapolis, MN Measurement Uncertainty
June 11-12, 2014  

If you would like to host a Seminar Series within your community or your company, please contact Dr. Greg Hetland for more information.

For our full schedule, visit our GD&T Seminar Schedule Page!

GD&T Chart per ASME Y14.5M-2009

IIGDT has released a new GD&T Symbol Chart supporting the ASME Y14.5-2009 standard. Since the original chart was issued based on the 1994 standard several changes have been implemented. In addition, the IIGDT chart provides clear and descriptive explanations for all symbols.

New for this year is the expanded use of 3D profile shown being applied to CAD models to demonstrate the effective use and interpretation of Profile call-outs.

Developed by Dr. Greg Hetland, this guide has been widely used in industry and can be found in many companies across the world.

Size: 24" (610 mm) x 36" (914 mm)

A Poster Paints a Thousand Words... Read about the History of the Chart here.

Visit the GD&T ASME Y14.5-2009 Chart on iigdt.com

GD&T Chart per ASME Y14.5M-2009

Dr. Greg Hetland

Phone: (612) 670-9311
Fax: (612) 395-5405



12159 Quail Avenue Ln N
Stillwater, MN 55082