Ended up getting the small 0.2mm - 1.28mm set for my tiny hole measurements and I’ll get the rest piece meal as necessary.
These were a fine price at ~$100 for the set and the black oxide finish to detect wear is a nice touch.
Good news, my 1mm medical drill bits from precise bits make a mighty fine hole. Even with a fairly high diameter to depth ratio in brass 
The holes all measure between 1 and 1.02mm
Surprisingly, 1mm x12mm precision stainless steel pins are relatively cheap from McMaster.
The pins have a sliding fit on the holes with almost imperceptible play (it’s barely there if you really try to feel for it)
This is super promising for some small kinetic pieces I’ve got in the works.
I never thought I’d want higher accuracy than 0.02mm but I might get some ad-hoc in between measurements for either side of 1mm. Just to really dial in the fits I’m going for.
And PreciseBits make some undersized drills I need to try.
0.98mm might be just the ticket 