Probe and method for producing it

摘要

The probe has a spherical prod (1) made from hard material and mounted on a shaft (4) made from aluminium oxide ceramic. This probe is particularly light in conjunction with high strength, and this is important for measurement accuracy and speed of measurement. The probe can have a casing (4) made from aluminium oxide ceramic, in which there is bonded a rod (6) under tension. The casing thus placed under compressive prestressing exhibits increased strength. <IMAGE>