A coaxial probe comprising a central conductor and a second conductor arranged to at least partly surround the central conductor and to be grounded, wherein a tip of the coaxial probe is bent such that the tip is at an angle in comparison with the main part of the coaxial probe;
- or wherein a tip of the coaxial probe is bevelled such that the surface at the tip of the probe is at an angle in comparison with the main part of the probe;
- or wherein a tip of the coaxial probe is at an angle to the rest of the probe such that the tip surface of the probe is at an angle in comparison with the main part of that probe, wherein said angle may be 30, 45, 60, 90, 120, 135, 150 degrees or therebetween.