> On Jun 9, 2015, at 22:57 , Chuck Guzis <ccl...@sydex.com> wrote: > > The 3M ones that I've seen are hard white plastic (not PVC or whatever Wright > Line used) with a keyhole-sort of affair that allows the circle to expand.
Interesting. I don't think I've encountered that style before, or if I did, that memory has snuck away in the night. -- Mark J. Blair, NF6X <n...@nf6x.net> http://www.nf6x.net/
