The helmic regulator was a component of the control panel of a Type 40 TARDIS. This device's principle function was to control the accuracy of travel through the Time Vortex. If incorrectly handled, the helmic regulator could greatly change the landing position of the TARDIS. Adric denied being responsible for reprogramming the helmic regulator, particularly as the lateral balance cones were already "out of alignment". (AUDIO: The Toy) The Tenth Doctor uses the helmic regulator after Martha asked him to take her to the spaceship Brilliant. (PROSE: The Pirate Loop)