Mechadendrite
From Lexicanum
A Mechadendrite is a robotic limb used by Enginseers and other members of the Adeptus Mechanicus. It assists in heavy lifting, construction and defence. It is connected to the central nervous system of the techpriest, and so is controlled through thought just like a biological limb. Mechadendrites are constructed from metallic alloys. They are usually longer than the techpriest's other arms and are built like tentacles to allow maximum reach and flexibility. Members of the Adeptus Mechanicus from the Enginseer rank and above are known to have mechadendrites, and although they may often only have one fitted, one could have as many mechadendrites as the body will support.
Servitors can also have mechadendrites to assist the enginseer they are assigned to.
