[ Laboratory apparatus and instruments, namely, lasers not for medical use, work benches in the nature of laboratory furniture, centrifuges, and microscopes; machines and instruments for measuring or testing fluid, solid or gaseous materials, namely, water meters, flow meters, flow meters and ultrasonic meter gas sensors; flowmeters; power distribution or control machines and apparatus, namely, electrical power distribution; rotary converters; ozonizers; electrolyzers; fire extinguishers; fir...