Bill Tandler

Bill Tandler is president and founder of Multi Metrics Inc. (Menlo Park, CA). For more information, call (650) 328-0200, e-mail or visit .


GD&T Workshop

GD&T Best Practices

Controlling the geometry of slots.

Let’s look at what it takes to control the geometry of slots, and see if there is indeed a “best practice.”

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GD&T Workshop

GD&T Functionality

A good way to learn more about GD&T is to critique its application.

GD&T is difficult to get right even though it is very logical. What does “right” mean? Right means several things, but mainly that it imposes achievable, fully function based and only necessary permissible limits of imperfection using absolutely syntactically correct code.

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GD&T Workshop

GD&T Pop Quiz Answers

How did you do on November's GD&T pop quiz? Find out here!

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GD&T Workshop

GD&T Pop Quiz

Surprise! It's a GD&T pop quiz.

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GD&T Workshop: DRF Establishment Process Refinements

Insights into the new tools provided by the ASME Y14.5 2009 Standard.

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GD&T Workshop: The DRF Construction Process

Consider the steps involved and the rules behind them.
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GD&T Workshop: Establishing Datum Reference Frames

The concepts, tool and rules...continued.

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GD&T Workshop: Datum Reference Frames

Understand the concepts, tools and rules you need to establish.
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GD&T Workshop: Decoding Feature Control Frames

Let’s get a precise handle on feature control frames and their impact.
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GD&T Workshop: The Fundamentals of GD&T

The many little pieces that make up the world of GD&T.
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Charles J. Hellier has been active in the technology of nondestructive testing and related quality and inspection fields since 1957. Here he talks with Quality's managing editor, Michelle Bangert, about the importance of training.
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Quality Magazine


2014 October

Check out the October 2014 edition of Quality Magazine for features!

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The Skills Gap

What is the key to solving the so-called skills gap in the quality industry?
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