42 Rental of new and used equipment for testing and measuring various electronic signals including frequency range, modulation, signal strength, magnitude, and outside interference as well as testing power generation and quality; Leasing of test and measurement equipment, namely, equipment for testing and measuring various electronic signals including frequency range, modulation, signal strength, magnitude, and outside interference as well as testing power generation and quality for use in connection with research, development, manufacturing, and installation in the aerospace and defense, automotive, software and computing, radio frequency and microwave, wireless connectivity, and telecommunications, namely, telephone, satellite, cable, and internet service provider industries