Three dimensional test body, e.g. for tactile and optical coordinate measurement instruments, has a body made from polymer reinforced concrete with steel ball bearings permanently fixed at its corners

摘要

3D test body for spatial measuring or positioning units comprises a tetrahedral body (1) with four spherical elements (2) at its corners to serve as feeler elements. The base body cannot be dismantled and is made from polymer or reacting resin reinforced concrete. The spheres are permanently fixed to the corners.