Terminator 2 - T-800: Man or Machine 18 cm
The T-800 removes the outer-flesh of his left arm, exposing his cybernetic arm and hand to reveal his true nature to Miles Dyson. Dyson recognizes the robotic arm as it is identical to the one in Cyberdyne's laboratory and realizes that he must destroy all of his work to prevent Judgement Day and the annihilation of makind.