Talk:Geometric dimensioning and tolerancing

message: The most interesting aspect to the topic Geometric Dimensioning and Tolerancing (aka GD&T) is that the document most often refered to as basis, ASME Y14.5M-1994, has no definition for Geometric Dimensioning. The Document title is "Dimensioning and Tolerancing." Also, when you become certified by the ASME you take the Geometric Dimensioning and Tolerancing Professional exam (GDTP exam).45.48.101.15 (talk) 06:03, 24 February 2015 (UTC)
thread_title:  GDT undefined 

message: "These are then referred to by one or more datum feature references which indicate measurements should be made with respect to the corresponding datum feature(s) found in the datum reference frame."
Measurements are not made based on the datum feature, but from the datum simulator. The datum feature is brought into contact with the datum simulator, which is to be of such quality as to be indistinguishable for the purpose from the theoretically perfect datum (gage maker tolerances)45.48.101.15 (talk) 06:10, 24 February 2015 (UTC)
thread_title:  Datum References 

message: I was wanting to know if there is an ISO document that covers what the ASME Y14.5 document has.  any help here would be great.
The ISO standard may have slightly less symbols than what ASME Y14.5 has, but ISO has the same basic content from what I understand. There seems to be several ISO documents for GD&T. It appears ISO split it up into several different sections from datums to runout. Purchasing them all may cost over $1000. Logic would tell one there should be an overiding document that specifies each section, but this remains to be seen. Maybe someone at BMW would know more about the ISO equivalent.  — Preceding unsigned comment added by 45.48.101.15 (talk) 06:39, 24 February 2015 (UTC)
thread_title:  ISO Equivalent 

message: The ISO breaks the concepts contained in 'Y14.5 into a number of smaller documents. ISO 2692-1998 covers MMC principles. Unless it's been replaced, the root document is now ISO 1101:2017. See http://www.iso.org/iso/en/CatalogueListPage.CatalogueList?COMMID=4647&scopelist=
Lothartklein 07:00, 22 June 2007 (UTC)
thread_title:  re: ISO Equivalent 

message: Aside from the article being far too brief, I'd like to point out that the two parts illustrated in the intro to the article at the top of the page are NOT the same.  Your feature control frame should have a .040 positional tolerance if you want them to be more similar.  Incase you're interested in actually conforming with ASME Y14.5-1994  —Preceding unsigned comment added by 12.71.226.254 (talk) 21:16, 7 July 2009 (UTC)
replies: text: Per the above comment and the one that was just made in the article, I updated the image to remove the standard tolerances and just show GD&T tolerances. Wizard191 (talk) 02:22, 10 January 2011 (UTC)
thread_title: Image

message: I'll be copying the first symbols chart to my sandbox, and completely re-doing it.  I'm going to make it to closer match a chart I have that's based upon ANSI Y14.5M-1982.  Thank you to who ever made it in the first place, so that 13 of the 14 the graphic symbols are already made.  Anybody know who did make the graphics?  I will need the "Location-Symmetry" symbol to finish the chart. </br> LP-mn (talk) 13:16, 26 August 2009 (UTC)
replies: text: Just out of curiosity, why are you remaking them? Are you going to make SVG versions? Wizard191 (talk) 16:39, 26 August 2009 (UTC)

text: If you update this to 2009, flatness can be applied to a feature of size it would affect the midplane it that case.  — Preceding unsigned comment added by 71.154.217.130 (talk) 20:02, 8 August 2012 (UTC)
thread_title:  I'm going to re-do the (first) symbols chart 

message: ASME Y14.5M - 1994 has been replaced by ASME Y14.5 - 2009. From ASME's website:
The Y14.5M standard establishes uniform practices for stating and interpreting dimensioning, tolerancing, and related requirements for use on engineering drawings and in related documents. [Geometric Dimensioning and Tolerancing (GD&T)] 
For a mathematical explanation of many of the principles in this standard, see ASME Y14.5.1M. Practices unique to architectural and civil engineering, land, welding symbology are not included.
Y14.5 is a replacement of Y14.5M.
http://catalog.asme.org/Codes/PrintBook/Y145M_1994_Dimensioning.cfm
(italics added)
ASME Y14.5.1M - 1994 (the mathematical definitions of the GD&T tools) is still current.
65.112.42.83 (talk) 14:19, 7 May 2010 (UTC)
replies: text: I'm not sure what your question is, but if it is "what is the current ASME spec?" then you answered your question with "Y14.5 is a replacement of Y14.5M.". It's quite common to be able to purchase old specs. Wizard191 (talk) 16:40, 7 May 2010 (UTC)

text: Just a small note: I think the standard is called Y14.5 per , which states: "The Y14.5 standard...". Wizard191 (talk) 16:43, 22 June 2010 (UTC)
replies: text: Yeah, I should have said "not the standard per se".  It's just that when you start talking about specific releases, you pretty much should include the year.  When we reference the standard in our facility, we say "1982", "1994", "2009".  Do you know why they dropped the "M"? Gdtps0566 (talk) 17:06, 22 June 2010 (UTC)
replies: text: This states that they "no longer deemed it necessary", whatever that means. Wizard191 (talk) 17:33, 22 June 2010 (UTC)
replies: text: I can't believe I put the "M" in there for 2009.  Gee, that's not embarrassing at all.  Oh, well.  I'm 1994 certified, that's my excuse.  "Metric compatible"... yeah, what's the point?  A unit is a unit, isn't it?  If that's all it was for, no wonder they dropped it.  Is there any concerted effort going on right now to improve this article?  Gdtps0566 (talk) 18:16, 22 June 2010 (UTC)
replies: text: Nope. The last big edit was August 2009. Feel free to help in any way. Wizard191 (talk) 18:47, 22 June 2010 (UTC)
thread_title:  Current Specifications 

message: This Article has to be extended for ASME Y14.5-2009 and the new/updated ISO TC213 standards in this field. "Geometric Dimensioning and Tolerancing" is a generic term and can therefore not be restricted to Y14.5. For the purpose of wikipedia and because of the huge overlap we have to address both sources (ISO and ASME) in the same article and as useful highlight the major differences. Lothartklein 19:31, 28 December 2010 (UTC)
thread_title: Include ISO

message: FYI: I just asked a question I could have put here as well on the roughness talk page. —Ben FrantzDale (talk) 14:31, 9 February 2011 (UTC)
replies: text: Your question properly belongs at Talk:Surface_roughness, because GD&T doesn't relate to surface finish. Wizard191 (talk) 15:40, 9 February 2011 (UTC)
thread_title:  Roughness? 

message: The table and one more place gives standard as "ANSI". Is it a typo? I always thought Y14.5 is ASME and never heard or came across ANSI equivalant
166.214.172.224 (talk) 20:45, 28 March 2011 (UTC)
replies: text: Fixed. Wizard191 (talk) 17:46, 29 March 2011 (UTC)
thread_title:  ASME or ANSI?? 

message: This note says "(It's been speculated that it will be re-dropped the next time the standard is revised.)" and the standard has been revised. Has this been dropped?208.12.102.4 (talk) 15:31, 31 January 2012 (UTC)
thread_title:  Symbol Table Note 6 

message: I'm not comfortable with the two sentences I added citeref tags to, they seem too much like personal research/opinion. If they are indeed true, there should be some way to include a valid reference to them.69.207.144.29 (talk) 16:03, 6 June 2013 (UTC)
thread_title:  Citation request in the "philosophy" section 

message: I feel like ASME information is outdated. Last issue of ASME Y14.5 is from 2018 (ASME Y14.5:2018).
I also feel like ISO GPS ('Geometrical Product Specification') desserves a new article as it is not an ASME equivalent but a completly different set of standards (see ISO TC 213 presentation)
--JfMaurel (talk) 09:59, 4 February 2021 (UTC)
thread_title:  ISO GPS and ASME update