SAE International (the Society of Automotive Engineers) has recently announced its winners for this year’s awards, and among them is John-Paul Belanger, from Geometric Learning Systems. Mr. Belanger is receiving the Forest R. McFarland Award for outstanding contributions toward the work of the SAE Engineering Meetings Board in the planning, development, and dissemination of technical […]
When investigating training in the topic of geometric tolerancing, one thing you’ll probably notice is the various options for the format of a class. The two major types are public classes, sometimes referred to as “open enrollment,” and on-site training. There are advantages to each. A public class is ideal for individuals seeking to learn GD&T. […]
If you are familiar with GD&T, you’ve probably heard of “virtual condition.” It is a number that represents a worst-case combination of a feature’s size along with its geometric tolerance. For instance, suppose we have the following example of a hole, with a size tolerance of 6 ± 0.2 mm: The worst case would be […]
There’s more to learning GD&T than just knowing the symbols. There is also a unique vocabulary—sometimes GD&T terms mesh with everyday usage, but sometimes a word can have a very specific meaning in geometric tolerancing.
Here are some examples:
The symbol circularity is sometimes called roundness. The two terms are synonymous, but the ASME standard uses circularity.
The […]
