Thanks for the info , guess it is time to buy some more tools.
I use my 6”LCD decimal, fractional and metric reading dial calipers all the time. Same with a 1” and 2” capacity micrometers.
My cheap import drill index of fractional, numbered, letters and metric aren’t used for drilling. The drill shanks are used to determine small hole sizes, like carb jets.
I use my small hole gauge set several times a year as well.
Add decimal and metric standard and tapered feeler gauges.
Oh, SAE and metric thread gauges too.
Just a list of measuring tools I tend to use often.
Hope this helps,
Steve