One of the revisions in the ASME Y14.5-2009 Standard is related to feature of size. In the new standard, the definition of the term, “feature of size” has been revised to make it a general term that refers to two type of features of size: a regular feature of size and an irregular feature of size.
The chart below shows a comparison between the 1994 and 2009 use of the term.![]()
A comparison chart showing the major revisions between ASME Y14.5 1994 and ASME Y14.5-2009 is available at our website. You can also sign up for an online update class, a public workshop or an onsite workshop.



I’ve had many clients ask me what’s new in the ASME Y14.5-2009 Standard. As you can imagine, a standard that has been 15 years in the making contains numerous changes. There are over 20 new or revised symbols and over 40 new or revised terms. In fact, almost every paragraph of the standard has some revision.
ETI is celebrating the new year with the largest company-wide sale in our 24-year history.