If the pressure drops, the soil pressure increases and this leads to subsidence at the ground level. Since exploitation of the Slochteren (Netherlands) gas field started in the late 1960s the ground level over a 250 kmÂ² area has dropped by a current maximum of 30 cm.
Confidence votes 18.5K. There are quite a few tools that the Astronauts use, though for construction and maintenance in space, the Pistol Grip Tool (PGT) is the primary tool of choice. Its predecessor was the Power Ratchet Tool (PRT), originally developed and created for servicing the Hubble Space Telescope.
PORTABLE HOLOVIDS could display a miniature hologram. Projectors were also implemented in many starship communication systems, both for use by pilots and passengers. Some droids could also record and display holograms (ex: R2-D2). Holograms could be transmitted directly, or they could be stored in various storage devices (such as HOLODISCS) and in ASTROMECH units or other types of droids.