Stop in for a cup of coffee

where to look yes, but how to measure no
Need a set of micro drills or pin gauges. Drills can be bought at a hobby and model shop or industrial/machinist supply.
Use the shank of the drill bits to measure the hole size.
A set like this has #80 to 61 bits.
Photos here: Carb tuning, larger accelerator pump nozzle?
Example of a set here: McMaster-Carr
You may also be able to use a spark plug gapping set if its the type with the open wire of sizes up through .035" or so.

The IFR should be here
upload_2022-2-28_23-1-54.png

But on a QF will more likely be here
upload_2022-2-28_23-4-7.png

They will probably be 0.033" to 0.037" - Just my guess.