Position measuring system

A position measuring system, comprising:

• a graduation support comprising a first detent;
• a detector arrangement on a holder for scanning a graduation of said graduation support at a preset scanning distance;
• an adjusting device that sets said preset scanning distance, said adjusting device is displaceable relative to said holder along a first direction, from which said preset scanning distance is measured, and from a mounting position to an operating position, wherein said adjusting device comprises:
• a second detent which, in said mounting position, acts together with said first detent of said graduation support acting in said first direction, and said first and second detents are out of engagement at said operating position, and
• a receiver which, at said mounting position, maintains said graduation support oriented perpendicularly with respect to said first direction, and said receiver is removed from said graduation support by being displaced in said first direction;
• a coupling element that couples said adjusting device free of play with said holder at least in a second direction perpendicular with respect to said first direction.