Or you could go to Harbor Freight and get one a lot cheaper. I've got one with a digital display that I've been using for about 10 years. Is it accurate, I don't know. But I can replicate my results consistently. I'll mash the button to turn on the display, open the trigger on my air brush and adjust it to whatever pressure I need. I don't remember what it cost, but I think it was around $10-$15.