In response to a recent post, see some photos of the options that southpaws have used over the years. Most bug manufacturers made small numbers of left handed bugs. Some ops would use a regular right handed bug, left handed, as Dave Ingram K4TWJ (SK) illustrated in his book. See photo from his book "Keys, Keys, Keys" And the Wilson Company made bugs for the Canadian military during WW-II that could be turned on their side and used like a straight key (you can do this with the older McElroy bugs too). Or the user could put some rubber feet on the pre-drilled and threaded holes and flip see upside down.