Fowler cylinder bore guage?

Wow, that's a pretty fair price for a new dial bore gauge set. Good luck picking up a used Starrett for that.

Here's a slightly painful YouTube video: [ame="http://www.youtube.com/watch?v=gjN0fGfUzl0"]Blueprint 101 - Using Micrometers, Calipers, & Bore Gauges - YouTube[/ame]

I'm sure there are others that are in focus