Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; [ Batteries, electric; Cables, electric; ] Densitometers not for medical use; Electro-dynamic apparatus for the remote control of signals; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Measuring instrumentation and apparatus, namely, digitizers; Flow meters; Gas flow meters; Gasometers...