Scientific, surveying, photographic, cinematographic, audio-visual and optical apparatus and instruments, and apparatus and instruments for research, navigation, weighing, measuring, signalling, detection, testing, inspection, life-saving and teaching; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution and use of electricity; apparatus and instruments for recording, transmitting, reproducing and reproducing sound, image ...

Electrical pickups for use with musical instruments