My power supply company want to update my (original sixties) meter. When I phoned them to arrange an appointment, I informed them that the mounting board is crumbling and asked if their engineer would replace it. "No," I was told, "but he will tell you if it's unsafe and if it is, he won't change the meter". So it seems that the board is my responsibility.
It occurred to me that I could have a replacement board standing by to go in when the engineer arrives and the two jobs could be done at the same time. Is there a recommended or required material that should be used?
Many thanks.