Patent ID: 7856734

Claim:
A linear measuring arrangement for measuring a relative position of two objects, the linear measuring arrangement comprising: guide surfaces; a scale comprising a measuring graduation; a scanning carriage for scanning said measuring graduation, wherein said scanning carriage is linearly guided in a measuring direction on said guide surfaces; a carrier device which can be fastened to one of said two objects; a coupling, by which said scanning carriage is coupled to said carrier device rigidly in said measuring direction and transversely thereto resiliently, wherein said coupling comprises: a first coupling element arranged on said scanning carriage, said first coupling element comprising a first coupling face; a second coupling element arranged on said carrier device, said second coupling element comprising a second coupling face, wherein said second coupling face contacts said first coupling face; wherein at least one of said first and second coupling elements is made of a ceramic material at least in an area of a contact, wherein said ceramic material comprises zirconium oxide.