Talk:Tension meter

Trying to trace invention
Not that I'm going to use much time on this, but freepatentonline's "referenced patents" links led me to, which is a 1947 patent. I don't have a login, so I don't get to see it yet. --Alvestrand (talk) 07:02, 3 November 2008 (UTC)
 * Google patents,, gave a better image. --Alvestrand (talk) 07:05, 3 November 2008 (UTC)