Prairie Road Iron Works in Linn, KS offers stainless steel rain gauges. Laser cut stainless steel rain gauges are made from 14 Gauge (stainless steel). They will not rust ever!
The mounting bracket are tabs bent at 90 degree angles to the back to allow the rain guage to be mounted to a fence rail, on a patio/deck, etc. The package includes a glass tube that drops into the twisted steel on the left side so it can be removed to empty or turned upside down for the winter months.