It is time to make GD&T much easier to use correctly. Here, then, are a number of examples of confusing Y14.5 Standard terms and definitions, along with recommended improvements.

In Geometric Dimensioning and Tolerancing (GD&T) there has been a long-standing conflict between the worlds of specification and measurement. The goal of specification is to ensure that components will function; the goal of measurement is to ensure that manufactured components meet those functional requirements. 

Today’s manufactured components are more complex than ever, with more parts diversity, more model year changes and tighter tolerances than ever before.

Today’s manufacturing industry relies on the use of GD&T definitions, and the ability to verify parts directly to them for first article and production inspection and reporting. Only then do orders ship and the manufacturer gets paid. Price and scheduling are negotiable, quality is not!

In his article for Computerworld, Paul Glen recounts that when most executives have told him that their operations require more accountability what they are really saying is that they need someone to blame.

Much has been written about the advantages of Geometric Dimensioning and Tolerancing (GD&T), and much of it is true. 

In today’s highly specialized world of engineering it takes a village to develop and produce a component part, let alone a complete product. 

Model-based Geometric Dimensioning and Tolerancing (GD&T) is powerful digital intelligence that can automate and improve quality across the entire manufacturing enterprise.