Rain Gauge Mount

This is a holder for a replaceable rain gauge tube, or udometer. See the photos for the glass replacement tube info. I buy mine at Menards up here in northern USA for about $5.

The holder is a simple plate that allows one to attach it to a railing like on a deck. The first one I made clips to my deck railing, but since most railings are different I created this simple flat one that can be screwed down to any flat surface. The holes are 3mm which works great for #4 sized stainless steel screws.

The calibration ring helps the gauge read correctly. The glass tube is flanged outwards at the top which allows extra water to roll into the tube. This results in readings that can be 30% larger than the actual rain fall. The calibration ring should fit snugly so that water can't run into the gauge between the glass and the ring. I simply silicone it in place.

Be sure to mount the gauge in a place that has an open view of the sky and is not shadowed by buildings or trees.