Butler is very simple in the fact that most of the pumps used only one style of indicator. It is belle shaped like so many other pump use but has a unique opening right below the stamped number. It's shaped like a flying saucer with an additional two small holes in the fold close to the edge.

BUTLER Collage.jpgButler Flying Saucer.jpg
Last edited by Tim Rohr; Mon Apr 08 2013 05:00 AM.