Scientific, nautical, surveying, electric, photographic, cinematographic, optical, weighing, measuring, signaling, checking/supervision, rescue/life-saving and teaching apparatus and instruments, namely, tyre-pressure measurers, tire and tire/wheel uniformity machines for the purpose of measuring and correcting the uniformity of tires and tire/wheels, electronic tire pressure monitors, tire balancing units and tire balancing machines for land vehicles, automatic indicators of low pressure in ...