Can I use electronic air compressor to check tire pressure if I don't have a gauge?

I have an electronic air compressor at my local gas station. I can input PSI into it, hook it up to a tire and it will automatically inflate & deflate the tire to match specified pressure. Can I do that instead of first checking my pressure with a special gauge that I don't have? via /r/cars http://ift.tt/2tQ5dRV