Most any of the battery switches that have protruding dial section would be easily flush mounted. Require making mounting ring attached to back side of wall, screwing switch to it from back side. Or if you don't mind screws showing just a spacer on back side (if panel not thick enough) between switch and wall and screw/nut thru all, like many marine applications.
I have the round Perko style, no ears, so would end up a bit recessed on 1/8" panel. Doesn't really lend itself to flush mounting. To flush mount it Id separate dial face label and knob, mount with shaft thru panel, stick label on panel reattach knob. Have to get creative on mounting spacer for no visible screws.
Is there a thread showing what coveredwagon did?
