Finished up  Z Column  rod base adjuster to be used with an indicator and the column crank. Today I finished the last  of the parts and installed on the mill.

Here is the stupid simple  idea Ive come up with .   It uses a magnetic indicator base to the Z column with adjustable height. The mount for the clamp block bolts on to the tapered limit switch stop, clearing both top side and lower Z limit switches.  . The 2nd clamp block has a rod that slides along the Z axis. Which adjusts for total machine Z height . Once the column/ tooling is  set up in lowest z position . This rod will be locked into place to  zero  indicator.  Than you can use the manual crank to thousandths of an inch. The idea works great it can remain fixed as it clears everything on the column. After use you can simply slide the main adjustment rod in up position out of the way .