Old Tooling

[f350ca]

A buddy got these with a Hardinge lathe he bought from Crown Assets, had no use for them so gave them to me. Some interesting pieces, does anyone recognize the shank? Must draw into the spindle with that course thread and seat on the taper.
Was looking for info on the boring head and found it on Criterion's site. Its from the 40's. Takes a 3/8 boring bar, the thread is 40tpi so scale is direct.




Now what is this, I assume its for boring as well, looks like a precision fly cutter. The cutter can be advanced with a 40 tpi screw behind it, then the body rotates on the shank, Im guessing on an offset for adjustments in .0001, the scale is logarithmic.







And this one. Some sort of boring bar. The cutter has the same 40 tpi backup screw.