In relation to the introduction by user @Mark I thought I would start a topic on regulation. Here people can post links and information, and of course questions. I expect this may develop into a very rich topic.
Here’s a useful page:
http://tituscrijnen.com/Titus_Crijnen_harpsichords/Checking_the_instrument.html
And let us not forget Carey Beebe’s excellent technical resource library:
[A fellow Aussie.]