Gearing system
From Tardis Wiki, the free Doctor Who reference
A gearing system was acquired and utilised by a Dalek as it fought to escape the Vault, enabling it to rotate its midsection weapons, the gunstick and the manipulator arm. (NOTVALID: The Last Dalek)
Behind the scenes
The gearing system was identified in the video game The Last Dalek, based on the television story Dalek. It was acquired in Level 3 and allowed the player to attack in any direction.