... applied to horseshoe magnetic yoke detectors or fillet weld detector CJX-A, the probe with active joints, wide utilization. Polar ... called annular probe, this probe is applied to annular detector CJX-O, electrified coil produce strong magnetic workpiece. Suitable for ... called annular probe, this probe is applied to annular detector CJX-O, electrified coil produce strong magnetic workpiece. Suitable for ...