This is a high quality Calibration Kit for network analyzers with 7-16 calibration standards, made by Spinner Germany, BN 533822. The frequency range is: 0 to 8 GHz. The set consists of: Termination resistance: (m) BN 533733 Open-circuit (m) (I=18,6 mm) BN 806405 Short (m) (I=21,6 mm) BN 806404 Termination resistance (f) BN 533732 Open-circuit (f) (I=23,6 mm) BN 806505 Short (f) (I=26,6 mm) BN 806504 Coupling 7-16 BN 196404 1 each 3,5" discs: Calibration constants and cal. coefficients 7-16 BN: 533822