0Vyger 3 years ago ReplyUpvoteA rain gauge is very simple. You get a plastic or glass tube and fix it to a fence post away from trees or other structures. After it rains you go out with a ruler and measure how much water is in the tube. I can sell you a pre made one for about $39.99 and $18.00 shipping if you rally want to buy something that badly. I will tell you where to send the check and after it clears I will look around for something to make one for you. I would also be OK with PayPal for payment also.