Patent ID: 7373852

Claim:
A length measurement system for measuring relative movements between first and second machine parts, said measurement system comprising a sensing head and a rule sensed by it, said sensing head being securely mountable on the first machine part and said rule being connectable with the second machine part during final assembly of the length measurement system, wherein the rule is mounted within a profiled part having two legs which is securely mountable on the second machine part during final assembly and into which the sensing head protrudes, said sensing head being prepositioned, via a removable mounting structure, and being releasably connected with said profiled part, when in a state prepared for final assembly, wherein in the state prepared for final assembly, the mounting structure connects the two legs of the profiled part with the sensing head; and wherein the mounting structure comprises two spacing members which are clamped within grooves of the sensing head by the profiled part.