HP / Hewlett Packard 41941B Impedance Probe Kit ? 50? Set ? Tested Working Fully tested and confirmed functional. Probe module powers, interfaces properly, and components respond as expected. Includes accessories, probe assembly, adapters, cables, spare probe tips, and original fitted hard case. Very clean overall with normal signs of professional lab use. Ideal for RF engineering, PCB impedance measurement, and material characterization using compatible network analyzers. Everything included is shown in photos?nothing additional promised. Included Components HP 41941B Impedance Probe Interface Module (Tested) Probe assembly with connector hardware Precision termination adapters (gold silver) Calibration / fixture posts Spare probe tips in protective containers Shielded coax cables Original factory fitted hard case with foam Condition Pre-owned | Tested Working Condition Notes Fully tested and functioning properly Clean appearance, some light cosmetic wear from use Case shows minor handling marks, foam intact