Canadarm

Canadarm (officially the Shuttle Remote Manipulator System) was a 15.2-meter robotic arm mounted on the Space Shuttle. It deployed and retrieved satellites, moved astronauts during spacewalks, and eventually played a critical role in assembling the International Space Station. The arm had six degrees of freedom, could manipulate payloads up to 266,000 kg in microgravity, and was operated by astronauts from inside the shuttle. Its successor, Canadarm2, is permanently mounted on the ISS and has been in continuous operation since 2001. Canada's contribution of the arm system earned it a permanent role in the international space program.