Air analysis apparatus; laser oriented instruments, namely, laser pointers, laser printers, laser welding devices, laser measuring systems, laser equipment designed for cutting drilling, marking, engraving and shaping optical lenses for eyeglasses, laser doppler for measuring purposes; gas testing instruments; testing apparatus not for medical purpose, namely, concrete testing machines, diagnostic apparatus for testing food, plastic testing machines, test adapters for testing printed circuit boards, textile testing machines, plastic testing machines; counters, namely, geiger counters; Air quality measurement apparatus, namely, particle counters