9 Scientific, signaling, life-saving and teaching apparatus and instruments for use in land vehicles, namely, breakdown warning triangles, automatic indicators of low pressure tires, petrol gauges; speed checking apparatus in the nature of speedometers and speed indicators, mileage recorders, distance recording apparatus; gas meters; temperature indicators; pressure indicators; luminous and mechanical signaling panels; pressure indicator plugs for valves; pressure measuring apparatus; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity for use in land vehicles, namely, electric batteries, batteries for lighting, battery chargers, voltage regulators, electric distance measuring apparatus, electric control panels, battery boxes, anode batteries, lighting ballasts, electric connectors, electricity conduits, electric contacts in the nature of plugs and sockets, electric loss indicators, electric wire connectors, electric couplers, electric cables, sheaths for electric cables, coaxial cables, insulated copper wire, chargers for electric batteries; navigation apparatus for use in land vehicles, namely, electronic navigational instruments; leveling instruments in the nature of leveling instruments for head lamps; revolution counters; tachometers; electric converters; simulators for steering and control of land vehicles; steering apparatus components, automatic, for use in land vehicles, namely, steering wheel angle sensors; Sensor apparatus for use in land vehicles, namely, wheel speed sensors, vehicle leveling sensors, motion sensors, thrust sensors, air mass sensors, ABS sensors, distance sensors, sensors for lighting, brake sensors, park assist sensors; switches, namely, switches in the nature of switching transistors for direction indicators and wipers, and replacement parts for the mentioned articles