The 85051A 7 mm Verification Kit contains a set of precision devices, with data, used to verify the error-corrected performance of the 8510 Network Analyzer system. The devices have precision 7-mm connectors and include 20-dB and 50-dB attenuators, a 10-cm beadless airline, and a 10-cm beadless stepped impedance airline (25-ohms nominal).