Apparatus for checking dimensions and/or shape of a mechanical part

Apparatus for checking dimensions and/or shape of a mechanical part comprising:

• a supporting frame,
• one or more feelers movable with respect to the supporting frame and adapted to touch a surface of the mechanical part to be checked,
• an armset coupled to the supporting frame, carrying said one or more feelers and comprising one or more thrust surfaces in correspondence of said one or more feelers, said abutment portion of the shaft defining an end abutment surface that is in contact with said one or more thrust surfaces of the armset,
• a transducer and/or display device for detecting displacements of said one or more feelers, including a movable part, and
• a mechanical transmission assembly coupled to said one or more feelers and to said transducer and/or display device and comprising:
• a shaft defining an axis, and
• a guiding element adapted to cooperate with the shaft and to guide movements of the shaft along an axial direction,
• said movable part of the transducer and/or display device being adapted to move substantially along said axial direction,
• wherein said shaft of the mechanical transmission assembly comprises:
• an abutment portion adapted to cooperate with said one or more feelers,
• a guide portion that is at least partially housed in the guiding element and defines an end transversal surface in contact with said movable part of the transducer and/or display device, and
• a resiliently deformable portion between said abutment portion and guide portion.