Rain Gauge calculation
My rain gauge cracked so I bought a new one. Just for comparison, I put 3 inches from the old one into the new one and it measured 2 inches. So one gauge is obviously wrong. I thought I would use a measuring cup to see which is accurate, but of course the measuring cup is in milliliters while the rain gauges are in millimeters. Does anyone know how to convert liters to meters? Or how many millimeters are in an ounce of water? Thanks.