So they are close.
In reality there is only so much good measuring past the third decimal point is going to do me as a hobbyist with limited ways to do anything with that information.
I did want to do a comparison and I did verify there is quite the taper in the bed, at least on this one side.
At least .005 from one end to the other.
That doesn’t sound like much until you consider that needs to be lapped out.
I haven’t even gotten to the prism side yet