Just be gentle with it and take your time. It may stick a bit if that movement hasn't been out of the case back in a few years. I would also suggest you place some sort of soft mat down so that if you do accidentally drop the movement, you wont damage / break the balance wheel pivots.
Your watch movement will look a little different than the photo of a pocket watch movement below but essentially all of the parts are the same and you can see the 'balance wheel' i was referring to.
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