9 Scientific, controlling apparatus and instruments, computers, computer systems, computer hardware, computer software; computer controlled apparatus and instruments; active gauge controllers; bakeout heater controllers, parts and fittings for the aforesaid goods; all the aforesaid goods for use with machines, apparatus, plant, component and ancillary equipment used to seal, isolate, or contain extreme environments, in particular furnaces, ovens or similar machines or cryogenic, vacuum, nuclear, radioactive, toxic, corrosive, flammable or explosive environments