Interesting article on C.O.S.C. on HR:Watches site

I stumbled upon a nice concise article on C.O.S.C. ratings mean on HR: Watches: A short excerpt: What's a Chronometer Certificate? 14-Sep-2004 Each little imprecision of a watch, whether it’s running fast or slow, refers to its accuracy. The test protocol which shows how accurately a watch runs in various positions and conditions, is called a certificate of accuracy. Click here to see the whole article... Within the article click on the Certificate to see a nearly full page version of it. -- C