Who needs them?
Have you ever actually cut a thread on a lathe? And it HAD to be compatible with all the others of the same basic description that are out there. The details of thread forms are fairly well available, but by the time you finish researching and UNDERSTANDING all of them, for JUST ONE TYPE OF THREAD, your head will be spinning. I know, I did work from the published standards a time or two and it is not easy. Whenever I can I just rough out the thread form and then use a die or tap of the appropriate class of fit to finish it. There are times when spending even $50 or $100 on a die or tap that will only be used once is a great choice to make.
And that's just thread forms, which are fairly simple. There are so many other mechanical standards.
Have I spent money on mechanical standards? You bet I have. I have not one, but three copies of Machinery's Handbook, two paper and ink and one in PDF format on my computer. And I have additional printed books with standards in them. But there are standards that I have never had copies of. And probably never will unless I have a paying job that requires them.
But this is an electronic board. Electronic standards? Yup, they are out there. I spent over 45 years working as a TV engineer and had to know and follow things like the FCC Rules and Regulations. Most of the TV stations where I worked subscribed to a service that provided them in a thick binder and periodic updates that had to be inserted in it. That cost some money, but I think the FCC itself published them for cost but keeping their binder was more difficult and time consuming.
And electrical standards; I do have a copy of the US NEC. It is out of date but I needed it for a project so I originally bought it new. A professional electrician would probably need to buy a new copy each year or two.
There's a tremendous amount of published standards and YES, they are needed and USED.
Interesting,the short form link didnt make that clear. As tom66 says it would be nice if british standards were to follow suit, little chance of that happening.
Who needs them, unless you're still using Whitworth threads and measuring speed in furlongs-per-fortnight.
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