Frozen micrometer

[JScott]

Thanks for the tips so far. I have some Kroil and was going to try it tonight. The spindle lock is rotating freely and seems to be just like the movement on my other Starrett mics. The ratchet is working fine although there is a little rust on the head of the screw holding it in place. I don't want to remove any paint or color in the engraving so I will save electrolysis for the last gasp.