The Tools of the Trade (alternative view)
Left to right-
Sonic pen (as seen in '
artners in Crime'
Future Sonic Screwdriver, with panel open to reveal neural relay. (as seen in Silence in the Library and Forest of the Dead)
Master's Laser Screwdriver, opened (as seen in Sound of Drums and Last of the Time Lords)
Sonic screwdriver, opened (as seen in, well almost every episode really!)