This grid encoder stopper is suitable for Roland VP-540 printers. This is the original Roland part (number 1000002594).
 
Printer compatibility
Roland RA-640
Roland RE-640
Roland RF-640
Roland RF-640a
Roland RS-540
Roland RS-640
Roland VP-300
Roland VP-300i
Roland VP-540
Roland VP-540i
Roland VS-300
Roland VS-300i
Roland VS-420
Roland VS-540
Roland VS-540i
Roland VS-640
Roland VS-640i
Roland VG-640
Roland VG-540