Audio testing apparatus, namely, portable apparatus for testing and measuring audio signals, sound level meters; audio testing apparatus, namely, instruments for testing the electrical functionality of sound recording apparatuses; machines for testing the functionality of electronic audio cables; continuity testers being continuity test apparatuses for electrical circuits; electric mains testers, namely, machines for testing the functionality of electric mains that supply and distribute electrical power throughout a building; phase checkers, namely, electrical testing devices to determine electrical voltage phase sequences and phase rotations in an electrical power system; sound level meters; acoustic meters; decibel meters; measuring apparatus and instruments, namely, electronic products for the measurement and analysis of audio signals, namely, audio analyzers; digital measuring apparatus, namely, digital sound level meters; audio apparatus; sound samplers, namely, combination digital audio recorders and digital audio players that record sounds and play back parts of sound recordings
Electrical and Scientific Apparatus