"JR North" wrote in message
...
In reverse engineering my radar scanner for mods, I am in the process of
machining an adapter, and I have run into a conundrum.
I need to very accurately plot a bolt circle radius consisting of 4 evenly
spaced 3mm screws, about 1/2" radius. The screws rock slightly in the
threads, so I can't just mike the screw shafts and extrapolate.There is an
open center, so I can't easily locate x0y0. The hole centers must be
plotted very accurately for alignment of the vaveguide. Help?
JR
Dweller in the cellar
--

Firstly, put the screws in and then tighten up a lock nut to remove the
wobble. Then do your thing with the micrometer/calipers.

If alignment is that critical I'd make everything a bit loose and then
adjust with a signal for max/min whatever.
D




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