I compared my Model A ammeter (on right) with a '32 ammeter (on left) and the Model A is about an eighth of an inch smaller in diameter making it a poor candidate. Ignore the fact that it looks bigger in the picture, just an optical illusion. Remember when you start calling the suppliers what you need will not be in their catalog but just one sitting on the shelf. Maybe you could find someone to rebuild yours? Whatever you do just please don't enlarge the hole in your dash. By the way, what is wrong with the one you have?
Charlie Stephens