Simplifying the measurement of bores

[mklotz]

Marv,

Thanks for the description and advice on how you designed and built this tool. The use of differential screws has provided me with ideas for other measuring tool projects.

Thank you, Paul

When you do your design don't forget metric threads. It will drive anyone who inherits your tools over the brink but, sometimes mixing metric and Inferial threads can yield effective pitches unobtainable with a single system.