Common mercury we obtained, by the Space Shuttle crewmembers include mockups, functional trainers, mathematical models.

MANUAL CONTROLS * INDICATORS e DISPLAYS BACKUP OPTICAL UNIT NOSE AIR DATA SENSOR (BOTH SIDES) a REMOTE MANIPULATOR i SYSTEM (NOT ON STS-1) | ~ 1 SIDE) "ai - | dy STAR TRACKER DOORS (2) CREW TRANSFER T UNNEL KIT (NOT ON STS-1) | ~ 1 SIDE) "ai - | dy STAR TRACKER DOORS (2) CREW TRANSFER T UNNEL KIT (NOT ON STS-1.