The Keysight 85058D, 1.85 mm Calibration Kit, makes error-corrected measurements achievable in coax to 65 GHz. The kit contains all of the necessary instrument-grade devices for performing a broadband calibration in the 1.85 mm interface. The 1.85 mm connector is the high frequency version of the popular 2.4 mm connector. Fully mateable with 2.4 mm, the 1.85 mm connector operates mode-free to 65 GHz. With a Keysight 8510, 1- or 2-port and Line/Reflect/Match calibrations are fast and convenient, while providing the highest accuracy in coax to 65 GHz. Using a Keysight 85106 Millimeter-wave system with waveguide to coax adapters, or connecting directly to the output of a Keysight 85109, 62.5 GHz system, your high frequency coaxial devices can now be measured with high accuracy. This kit contains open and short circuits, broadband fixed terminators, and in-series adapters. Gauges can be ordered separately.