Vibrascope

The vibrascope was a type of surveillance device used by the Daleks in their city on Skaro. It was used to track vibrations. (TV: The Daleks; AUDIO: Return to Skaro)

Fifty cycles after the Thal-Dalek battle, a vibrascope detected Susan Foreman entering the Dalek City at Section 11. After confirming her identity, the Dalek Supreme ordered all surveillance resources to be placed on her, causing the Daleks to be caught unaware by a later party of intruders. (AUDIO: Return to Skaro)