Bill Tandler

Let’s get a precise handle on feature control frames and their impact.

The many little pieces that make up the world of GD&T.

Insights into what can go wrong and imposing constraints.

Discover the important components of the perfect imaginary world of GD&T.

What is geometric dimensioning and tolerancing (GD&T)?

GD&T is the only means we have to say precisely what we want so that others can do precisely what we say.

Why is Geometric Dimensioning and Tolerancing (GD&T) so often considered “Grim, Depressing and Troublesome,” when, in so many ways, it is the “Greatest Design Tool” and essential for cost-effective manufacturing and reliable metrology, assembly and operation?