Checking (supervision) installations; warning and control installations for use in industry and in aerospace equipment; meters, gauges, recording apparatus, installations and apparatus for public address systems, all included in Class 9; flight data recorders, computers, calculating apparatus, electric switches, wireless and television apparatus and instruments; and parts included in Class 9 of all the aforesaid goods; but not including calculating machines or parts and fittings for such machines or any goods of the same description as any of these excluded goods.;