And that is shown by the markings.

I just looked one up, it's less than 20€, 0,02mm of precision. There are just 4 markings between 1mm and the next.

So instead of 9 markings, each marking adding 0,01mm, you just add 0,02mm. Doesn't sound complicated at all.

I haven't found an analog one, but a digital one with 0,01mm of precision costs 30€. Maybe an analog one costs 50€.

So if adding 0,02 is too complicated, you can just buy a 0,01 one for 30€ more. Which is the price of a pizza for a tool that will last years.

Anything more precise than 0,01. You probably have a lot of experience using a caliper. Whatever method it uses to display that precision is gonna be second nature.