Posted for "Tom Gourley" <tom.gourley@verizon.net>:

Jeff,

Here's an example using material usually available from a good hardware
store. If memory serves these strips are 0.5" wide and 0.062 thick. Copper
would be ideal but brass also works. These breakers are spaced 0.75" center
to center on the horizontal and 1.2" center to center on the vertical. The
breakers are Klixon 7277 series from Lancair. I've seen a vertical spacing of
1" used on a panel but that's awfully tight.

Tom Gourley