

This course is designed for engineering, designing, drafting, quality control, procurement, tooling, production, purchasing, manufacturing, CAD inspection, and shop personnel New engineers University students Anyone who wants to learn more about the design language of geometric dimensioning and tolerancing (GD&T) or the Y14.

self-study course is designed to be taken at your convenience and on your own schedule. Guide: ASME Y14.5-2009' also includes a detailed paragraph-by-paragraph explanation of the principal changes in ASME Y14.5-2009. There were a number of comments / questions about 94's applicability to inch-units, but those were addressed right in the standard itself. My understanding is that the "M" was dropped in the '09 release because it is now understood that all examples will be in Metric. Because ANSI (which gives official recognition of ASME & other voluntary standards) must follow US law, the standards that it sanctions must be compliant as well, and therefore the Y14.5 standard must be metric. The core of the matter is that Metric is the only LEGAL (as in codified in the US Legal System) measurement system in the USA (US Customary is not codified.

The distinction is made because prior to '94, the standard included examples/illustrations using US Customary Units, and not metric units. The '94 release included an "M" in the title to reflect that the standard was Metric based, yet it is still fully applicable to the US Customary system.
