1.   At the most distant point of their spacewalk, Lu and Malenchenko erected a six-foot mast and equipped it with a magnetometer, a guidance device.

2.   But the astronauts also plan to install another guidance system device, a new flight computer, battery voltage regulators, a transmitter and data recorder.

3.   The men will scale the length of the station, connecting communication and computer cables to the new Zvezda module and installing an external guidance device called a magnetometer.

4.   The large guidance device will be launched from Central Asia.