All, I recently acquired 2 unique Sten items, and I thought I'd share them, and seek your input. They are both Sten Mk III barrel gauges. One is definitely a chamber gauge. The longer, tapered gauge may be to measure barrel erosion, however there are no markings to indicate "go" or "no-go." I checked the Laidler and Iannamico books for these tools, but did not see them listed or shown. The Sten Mk III was not a very popular design, so maybe they are not common gauges...at least I've never seen them before. Maybe the longer one has to do with the Sten MK III barrel being non-removable? If anyone has more information on these gauges, I'm interested in learning about them. Perhaps one of our British members may be able to provide further insight? http://www.sturmgewehr.com/dalbert/MGBoards/Sten_Gauges_Web.JPG Thanks! David Albert dalbert@sturmgewehr.com