Omega device

"Omega device" was a term sometimes applied to a technological creation of the Time Lord Omega. Davros and the Imperial Daleks referred to the Hand of Omega as the "Omega device." (TV: Remembrance of the Daleks) Ace later used an Omega device, capable of breaking down the barriers of time, to time lock Skaro in an attempt to remove the Daleks from history, resulting in time being fractured. It was hand-held, could fit in a pocket, and could create a time corridor to pull an individual through time. (AUDIO: The Lights of Skaro)