Pin gauges come in .0010" increments in sets.
But you can buy pin gauges individually in between. I have some of these for using as a spud to dial in barrels.
Identifying these without reading the engraved value, if you can beat machinists with micrometers, when all you have is dial calipers, you are good.
What does is all mean?
You may think that micrometers are more accurate than calipers, while that is usually true, there still is the advice, " Never bet on another man's game."
The word 'forum" does not mean "not criticizing books."
"Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist.
Are we a nation of competing ideas, or a nation of forced conformity of thought?