Chuck Maddox’s Watch Blog

This page is a journal of my journey in the field of Horology, which is timekeeping. In other words, watch collecting. Which in my case is the collecting of chronograph watches. To contact me, email me at: .

Location: Chicagoland, United States

The Extremely wordy version of my Resumé is located here:

Tuesday, December 07, 2004

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:

A short excerpt:

What's a Chronometer Certificate?


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


Post a Comment

<< Home