Q – Can you please explain the meaning of the following tolerance symbol? Which type of standard is this, ASME or ISO?

Edward C.

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Hi Ed,

The profile tolerance does not adhere to either the current ISO or ASME Y14.5 standards. Neither standard permits the word “BILATERAL” in the feature control frame. Also, both standards require that the geometric symbol be placed in the first compartment and the tolerance value in the second compartment, followed by the datum references in the third, fourth, and fifth compartments, if applicable.

Thanks for question,

Alex

Our December web special offers a discount on the Fundamentals of GD&T web-based training course (ASME Y14.5M-1994).

Fundamentals of GD&T Web-Based Training
Register Now

This fully interactive course in geometric dimensioning and tolerancing fundamentals contains 28 lessons that explain the symbols, modifiers, rules, and concepts of GD&T, based on ASME Y14.5M-1994. The course is recommended for all individuals who create or interpret engineering drawings. Topics include:

The pace at ETI has been pretty busy as we continue to develop products and workshops for the new ASME Y14.5-2009 Standard.

We’re nearing completion of the new version of our pocket guide. The GD&T Ultimate Pocket Guide based on ASME Y14.5-2009 will be published in mid-November.

Besides updating it to the 2009 standard, we’ve also added new features to the pocket guide, including:

• A spiral binding that allows the guide to lay flat
• Index tabs on the page edges that provide quick access to topics
• Fold out front and back covers that are packed with reference information
• An additional 50% more information about GD&T topics
• More applications examples to help you envision the concepts
• Cross-references with ASME Y14.5-2009 Standard
• A larger format that provides more room for charts and figures, but still fits in a shirt pocket

The guide will be ready soon, and pre-orders will be taken early next month.

Due to popular demand, the 3-hour ASME update seminar is now available in  live web format:

“A Quick Look at the ASME Y14.5-2009 Standard”
Monday, September 14, 2009 (CLASS IS FULL)
1 pm – 4 pm EST
Instructor: Michael Adcock

The 3-hour lecture introduces the major changes to the ASME Y14.5-2009 Standard. Alex  was one of the participants in creating the new standard. His update session  provides insights as to why the changes were made and provides a short introduction to many of the changes and new features. It also includes a discussion about when it makes sense to implement the new standard.

The regular price of this seminar is $50. Purchase Alex’s white paper/comparison chart package for $30 (plus shipping) and attend the live web session for free.

Each seminar participant receives:

• Session notes, by Alex Krulikowski
• Discount coupon for the one-day ASME Y14.5 1994-2009 Update Workshop

Session notes will be shipped with comparison chart package.

The new ASME standard contains numerous changes that affect the specification and interpretation of tolerancing. As one of the participants in the creation of the new standard, I will provide insights as to why the changes were made at a lecture on August 13th, from 9 am-12 noon, here in Michigan.

“A Quick Look at the ASME Y14.5-2009 Standard” is a short, 3-hour session about the new ASME Y14.5-2009 Standard. This update session will get you started in understanding the depth of the changes and new features, and it includes a discussion about when it makes sense to implement the new standard. Topics covered include:

• The ASME standards development process
• Introduction to new and revised terms
• Introduction to new and revised symbols
• Synopsis of major changes and why they were made
• Discussion on implementing the new standard
• Questions/answer session

The introductory price of this workshop is $50, but the first 20 people to purchase my white paper/comparison chart package for $30 can attend for free.

A few months ago, I created a survey asking whether companies plan to adopt the new Y14.5-2009 standard, stay with the 1994 standard, or change to ISO standards. Using statistics elicited from the survey responses, I have developed a white paper addressing these issues.

“Deliberations on Dimensioning and Tolerancing Standards” is a 12-page paper that will help organizations decide what path may be the best for them. It includes a summary of the major changes to the ASME Y14.5 standard and insight into what other companies are planning. It also includes my deliberations and recommendations on changing dimensioning standards.

It’s available for $25 on our website.

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.

In order to provide a quick reference illustrating many of the standard changes and additions, I’ve created a set of charts comparing the features of ASME Y14.5M-1994 and ASME Y14.5-2009.

The New Features Comparison Chart Set is a comprehensive set of two, 2-sided, 11×17 charts that itemize changes in the standard. It highlights additions, revisions, and modifications to symbols, terms, and modifiers, including changes to the MMC modifier, feature of size and “irregular” feature of size, the new datum translation modifier, and numerous other new features.

Because it provides the 2009 standard references, you can quickly look up additional information as you need to on the job. The charts fits neatly in a 3-ring binder.

The two-chart set is only $12.

Hopefully by now, some of you have taken a look at the draft of the new ASME Y14 Standard and have developed some comments. The October 21st deadline to submit them is just around the corner. The comments we receive from the public are an important part of the review process.

I have compiled a list of about 150 comments that I would be happy to share. You can take a look at some of the issues that I found and consider them while you develop your own comments.

Remember, if you can’t attend the upcoming ASME Y14 Committee meeting, you can still comment. Here’s more info from the ASME site.

The public review proposal is available in hard copy for $85 from:

Mayra Santiago, Secretary A
E-mail: ansibox@asme.org
ASME Codes & Standards
Three Park Avenue, MS/23E2
New York, NY 10016

In a previous post, I told you about the upcoming ASME Y14 Committee meeting and invited you to attend. Here’s a little more information about the standard review process.

There is a draft of the new standard out for public review. The public can comment on it until the October 21st deadline. Your input is valuable.

If you can’t attend the meeting, you can still comment. Here’s a quote from the ASME site:

Public comments may be submitted on proposed draft new ASME Standards, and on proposals to revise, reaffirm or withdraw approval of existing ASME Standards.

Comments should be addressed to [gomezc@asme.org] with a copy to the Board of Standards Review, American National Standards Institute, 25 West 43rd Street, New York, NY 10036. Fax: 212-840-2298; e-mail: psa@ansi.org

The public review proposal is available in hard copy for $85 from:

Mayra Santiago, Secretary A
E-mail: ansibox@asme.org,
ASME Codes & Standards
Three Park Avenue, MS/23E2
New York, NY 10016

As most of you know, I’m a member of the Y14 Standard Committee, and we’re in the process of updating the standard. Many of you may not realize that the general public is invited to attend and comment on the standard. You can buy a copy from the ASME site for $85. (More info)

Please think about attending the next meeting and telling us what you think.

Y14 Committee Meetings on Engineering Drawing and Related Documentation Practices
Sunday – Friday, October 5 – 10, 2008 8:00 AM – 5:00 PM

Venue and location information:
Crowne Plaza Memphis Hotel
http://www.ichotelsgroup/h/d/cp/1/en/hotel/memss
300 North Second Street
Memphis Tennessee , United States

Here’s a link to more info about the hotel and discount available:
http://calendar.asme.org/EventDetail.cfm?EventID=6008