pooch, this is my original rendition of the Mason gage that I made. This is the modification that eightbore stated that Dr. Gaddy used.



This is also not a friendly gage to use as you need someone to write your figures down, as I copy all my readings of the ones I measure.

As to the spring tension on the dial indicator, why would you need more tension on the needle?

Last edited by JDW; 02/12/13 02:12 PM.
David