Sonic pen
From Tardis Wiki, the free Doctor Who reference
The Sonic pen was a sleek black device used by Matron Cofelia that functioned in a similar fashion to the Doctor's sonic screwdriver, but looked more or less like a pen. In discussing the similarities and differences between the sonic pen and sonic screwdriver the Doctor implied both were of similar manufacture. The Sonic Pen was able to open deadlock seals in the Adipose Industries Headquarters. It is unknown whether or not the device also functioned as a pen.
The Doctor later threw the sonic pen into a bin. (DW: Partners in Crime)
Behind the Scenes
- A toy replica of the Sonic Pen was released in a two-pack with the Doctor's Sonic Screwdriver. Both now featured a non-Ultra violet blue LED and identical sound effects. Twisting the casing of the pen would extend the ink tip.
