Jules Polain became the director of the Belgian Proof House in 1890. He developed this gauge by 1900.
Notice the placement of the crushers. So what prevents this from being duplicated using modern strain gauges? Nothing except the expense. That really is what is being said when a manufacturer talks about placing 1 strain gauge at X inches.....
If a maker wants to know what is going on, why contract Bell? Why not go to the best around HP White
http://www.hpwhite.com/ ? Do not get me wrong. I use Gaugemates, etc. But I do not believe they have any impact on barrel pressures. They will not allow me to use 11,000 psi loads in a 100 year old gun built for 7,000 or 9,000 psi loads.
I just purchased this Ithaca 10ga. It will get a diet of only black powder and RST low pressure ammuntion.
Pete
