I think he is referring just to the digital micrometer. Brownell sells the 12-16 or 20-28 Skeets bore gauge for about $94 each. They also sell the Manson wall thickness gauge for about $100. Galazan sells a bore gauge similar to the Skeets gauge for a little over $100, maybe $125. Although Oscar Gaddy's modification to the Manson gauge was the best option at the time, I was taught by the maker of the best gauge on the market, Jon Hosford, how to use the Manson accurately in the horizontal position. This allows you to utilize the gauge at a gun show or auction house table without worrying about how to suspend it from above. Jon realizes that not everyone can afford his gauge and is generous enough to share his expertise on how to properly operate a $100 gauge.
