Additional Features: Frequency Range: 45 MHz - 26.5 GHz      Type: Calibration Kit The Agilent 85053B Verification Kit contains a set of precision devices, with data, used to verify the error-corrected performance of the Agilent 8510 Network Analyzer. The devices have precision 3.5-mm connectors and include 20 dB and 40 dB attenuators, a 7.5 cm beadless airline, and a 7.58 cm beadless stepped impedance airline (25-ohms nominal).