Dear Pramod,
You can create a counter (measuring point) and assign this counter to the PRT (provided that PRT shall be created as an equipment with PRT category).
Now you have to use a suitable enhancement (BAdI / user exit) to update this counter upon each material inspection.
Then create a task list (either general / equipment). And assign MIC to the tasklist operation & assin inspection point 300 to tasklist header.
Then create a counter based inspection plan which will trigger calibration order on every 1000 count.
Then schedule this maint. Plan & do deadline monitoring in background if required.
This will create calibration order on every 1000 inspectins, release order, which in turn will create inspection lot.
Do result recording for this inspection lot, make ud.
Then TECO the order, then settle the order if any cost associated with it.
Maintenance plan & measuring point shall be directly assigned to PRT master data (Tcode = IE25 create / IE02 change), in tab strip PRT data, for calibration purpose
Regards,
Vinod.V