u/Galaaska

This is my first year using a drip irrigation system for my raised vegetable beds. I got the garden in minutes garden grid system, so it’s pretty quick and easy to set up and get going. My question is, how do I know how long to let the water go while using this. I see things that say ‘water 1-2 inches’ but how do you measure water in inches?! I’m not a beginner gardener but I’m no expert either. I’ve always hand watered all my vegetables in the past with a soft rain garden wand, so even that is kinda winging it. The system doesn’t have any specific water pressure guidelines and it works without a pressure regulator so it’s just normal hose pressure. Any advice?