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Graphics is currently nominated to be improved by WP:IDRIVE. Vote for it if you want to contribute.--Fenice 20:11, 16 August 2005 (UTC) You have placed in a link to American standards but no to British? Is there a reason for this? Would be helpful if we could see helpful relevent links to this? —Preceding unsigned comment added by 18.104.22.168 (talk) 16:47, 14 January 2008 (UTC)
simple summary about section on engineering drawing
I need a very simple summary about section on engineering drawing with some figures is most attrivtive palce
the symbols for projection
First Angle Projection First Angle Projection Symbol
Third Angle Projection Third Angle Projection Symbol
These first(or third) angle projection symbols are respectively derived by projecting a (hollow) truncated cone placed in the first (or third) quadrant, in first(or third) angle projection as described by the glass box method and then flattening the vertical projection planes to lie in the horizontal plane.
Due to the symmetry of the cone only one of the side views needs to be generated. The double circles represent the top view of the cone and the trapezoid the side view of the cone.
[TO DO - insert suitable image here showing generation of views.]
Samiran cj 05:20, 27 December 2006 (UTC)
History of Engineering Drawing
I think there needs to be a history section for engineering drawing. Several years ago I read that the invention of drawing that accurately represented the device lead to the "renaissance" more than anything. In the past everything was drawn flat and without Perspective (graphical) and could not be successfully built in most cases. Septagram (talk) 01:36, 4 February 2008 (UTC)
please i am from Nig and i want know the origin of engineering drawing and it's important to civil engineers pls help me out bcos i need it now. (Preceding unsigned comment from unknown user relocated from above contents box to this section by CheMechanical (talk) 16:49, 8 April 2008 (UTC))
Example of Eng Drawing
The figure in this section of the article is wrong. The section arrow should point in the opposite direction, and the section A-A note should be below the section view. Iepeulas (talk) 18:14, 5 March 2008 (UTC)
Absolutely right! Section Views go BEHIND the arrows. The line indicates the 'cutting plane' and the arrows indicate the direction the 'observer' is looking from. —Preceding unsigned comment added by 22.214.171.124 (talk) 21:44, 16 March 2009 (UTC)
We have gone through an overhaul of images on this page, converting from raster to vector. The mechanical drawing is still to be completed. If you have any comments or suggestions for improvement of these images please post them at Wikipedia:Graphic_Lab/Images_to_improve#Engineering drawing. Thanks. Dhatfield (talk) 11:58, 28 June 2008 (UTC)
WESLEY A HARTMAN
BS 8888 in US/Canada?
"Third angle projection is primarily used in the United States and Canada, where it is the default projection system according to BS 8888:2006...."
Unless I'm very much mistaken, BS 8888 cannot be the reason for the default use of the third angle projection system in the US and Canada. BS stands for British Standard, so doesn't apply to those working outside of Great Britain.
I'd change this sentence myself but I have no idea of the actual reason behind this default system in the US and Canada so I'll leave it to someone that has a better idea.
- I agree, also we are told that first angle is used in Europe which could imply that the UK uses first angle contrary to the British Standard.
Darrylh08 (talk) 22:04, 8 February 2011 (UTC): Yes, in Canada we were taught ANSI (American Standard) third angle projection method, without even referring to e.g. Y 14.3 or Y 14.5. But if I need to interpret European drawings, I refer to my ISO 128-1982, which explains both common projection methods. We should remember that the British may not necessarily consider themselves European, and our North American standards may have 'come over on the Mayflower'. I suspect BS 8888:2008 "Technical Product Specification" is a recent consolidation, is correct, and explains best practices, but is not a historical reference. Also, I notice Wikipedia article "Multiview orthographic projection" explains better. Maybe we should cut this shorter and link refer to that article?Darrylh08 (talk) 22:04, 8 February 2011 (UTC)
if a line is inclined to both HP and VP and one of its end lies in HP and other in VP then how to draw the projections?? —Preceding unsigned comment added by 126.96.36.199 (talk) 07:27, 14 August 2009 (UTC)
Wow, this article is verbose. There is a lot of good essay writing, but much of the verbage is not appropriate for Wikipedia. I'll take a swipe or two at individual sections when I have the time, but any one of headings can prolly be reduced for a few concise sentences and still retain the same information. Help in this regard is welcome. Also, SOURCES!!!! — fcsuper (How's That?, That's How!) (Exclusionistic Immediatist ) — 03:25, 7 August 2012 (UTC)