The MMR-1N maximatic regulator by Clippard gives accurate regulation of the air varying from 7 to 125 psig while regulating range ranges from 7 to 100 psig for the MMR-1N whereas 7 to 125 psig for the rest. For adjusting the pressure and preventing accidental adjustment, pulling out of adjustment knob is necessary. Adding -P30 or -P60 to the end of the part number extends the availability of the 30 to 60 ranges as well.