85050D Economy Mechanical Calibration Kit, DC to 18 GHz, 7 mm

85052B Standard Mechanical Calibration Kit, DC to 26.5 GHz, 3.5 mm

85052C Precision Mechanical Calibration Kit, DC to 26.5 GHz, 3.5 mm

85033E Standard Mechanical Calibration Kit, DC to 9 GHz, 3.5 mm