A Hammerite machine and precursor to the Mechanist Watcher, this device is seen only in the guard posts of Cragscleft Prison. It rotates in a continuous circle until it sees an intruder, which it will lock on to. Unlike the Watchers, the alarm is triggered immediately upon identification and does not shut off even with the destruction of the periscope.
The periscope can be deactivated easily and in fact can be treated as a living organism. When struck with a sword or arrow, it produces the same sounds as would any (armoured) corporeal creature in the game. Once "killed", the periscope will become blind and stop its rotation.
The periscope cannot be "knocked out" but is susceptible to stealth hits.