Thermally compensated test body for coordinate measuring machines

The invention relates to a test part, the test part comprises at least two force measuring (12) and at least one connection element (11), a screw hole is used for connected with at least two force measuring. A connection piece is provided at least one fastener to form a measuring is fixed on the connecting component is a. The test part is a thermal display, namely, the force measuring (12) is a distance constant of the experience the temperature range. Can receive the thermal display via a fastener, for example, which is provided with a thermal-expansion the material merely.