9 jump starting apparatus for vehicle batteries; apparatus and instruments for testing gas composition, air composition, and/or fluid flow in pneumatic and hydraulic systems; automatic valves, solenoid valves, automatic aspirators for inflating life-saving rafts and dinghies, electrical controls for engines and motors, pressure control apparatus and instruments for cabin pressurization for aircraft; temperature control apparatus and instruments for cabin environmental control for aircraft and trains; metered pumps for system rig calibration; breathing gas regulators, oxygen masks not for medical use, liquid oxygen conversion and concentration apparatus, liquid and gaseous oxygen indicators and transmitters, gas pressure and manometer gauges, oxygen concentration and gas pressure monitors, accumulators, data recorders, digital pressure and temperature controllers, digital engine controllers, meter readers, digital micrometers, train speed monitors, incident recorders, de-icing apparatus, and testing apparatus for use on the aforementioned goods; computers, computer hardware; computer software for providing control systems for data recorders/monitors, oxygen control systems, and associated life support equipment for aviators; digital panel meters and automatic controllers; fuel tank pressurization apparatus namely; pressure gauges, pressure reducing valves, relief valves, instruments for use on aircraft, namely air temperature sensors, solenoids; and thermostats; ice detecting apparatus and instruments for use on aircraft, control apparatus for ventilating and air conditioning installation, control regulators for pressure control valves for cabin pressurization and air conditioning, time delay and cycles switches, pressure switches; altitude measuring, indicating and switching devices; pressure control valves, electrically actuated butterfly valves, test apparatus and instruments for monitoring the flow of oxygen, apparatus for testing pneumatic rigs, electrical sonar buoy releasing mechanisms; aircraft safety equipment, namely, emergency warning lights and alarms, and parts for the aforementioned goods