Trying to understand the accuracy of the Balluff MicroPulse Postion Sensor

Good Afternoon ,

I am thinking of using a few Balluff MicroPulse Postion Sensors on a project .
Before I purchase , I would like to check the accuracy and repeatibility on these units. Excuse my dumbness , but what does this mean, on their Data Sheet. Especially the uA , and uM ?

Repeat accuracy ≤ ±0.2 μA
Reproducibility ≤4 μm
Resolution ≤ 0.2 μA

Thanks in advance ,

the "u" with the line on it stands for micro

so, the .2 uA = .2 micro amps and the other is for micrometers

I'm sorry. I didn't think about the relationship in microamps . I was thinking millimeters.

Thanks,