Frozen micrometer

[krv3000]

hi well you can remove the top dismantle the ratchet at the top undo the base of the ratchet but don't remove then with a raw hid hammer hold the top sleeve in your hand then hit the base of the ratchet this will free off the sleeve as its held on by a taper once off you will see a threaded ring on the top thread this is used to adjust the mane thread remove it will free of the center rod hope this will help