G gamma Sergeant Full Member Minuteman Jul 14, 2009 456 2 56 Jul 31, 2010 #1 Jul 31, 2010 #1 I see these bore straightness gauges from PTG, what are these things used for.
RADcustom Registered Coonass Full Member Minuteman Jun 1, 2008 1,879 9 Louisiana Jul 31, 2010 #2 Jul 31, 2010 #2 Re: PTG bore straightness gauges http://www.ehow.com/about_6607458_bore-straightness-gauge_.html
