Cleaning Precision Measuring Tools

[jmayaa]

I recently picked up some used dividers of different styles along with some micrometers.
The calipers are pretty much coated with a surface rust or really tarnished. The micrometers have a few spots of rust here and there and the insides are really dirty.
I was thinking of using Evaporust, but am concerned it may be to harsh for the mics. They have the satin type finish.
Just wondering what techniques you all have used to derust/clean your precision tools.
Thanks,
Jeff