Tightest Angular Tolerance that can be Specified & Measured?

[TorsionalStress]

I would like to know, what is the tightest angular tolerance that can be specified on a drawing which can actually be measured? We can specify 0.001” on a drawing & actually measure it, what would be the case for angles?

I’m seeing some drawings with a plus/minus .003 degrees

Any response will be greatly appreciated!

 

[TeunisTVM]

Your answer on your question depends of the equipment that are availeble in the factory and every case will have is own answer.
The best way is to have good communication with the factory, about what the can and prever

So a real answer i can't give you here.