The instrument binnacle houses the latest development of the thin film transistor (TFT) meter technology introduced in the Lexus LFA supercar, including a moving central ring. (theintelligentdriver.com)
You have the central ring where you have armed policemen that can be called in to assist in the polling units when the need arises. (punchng.com)
The central ring spanned 1.3 light - years across and was expanding at about 37,000 km / h. (sciencenews.org)