OK I'm going to play cheezydemon for a minute here:
Throw away your hydrometer. You don't need it. Just wait plenty of time (like, three weeks to a month) and your beer will finish on its own. Hydrometers are more trouble than they're worth.
OK, now as myself:
Actually, I think cheezy's mostly right. Don't fret too much over the hydrometer. If you leave your beer in primary for long enough (I think at least two weeks for almost any beer, longer for bigger beers), you shouldn't have to worry about racking or bottling before fermentation is complete. I still take a hydrometer reading at the end because I'm curious as to what my attenuation was, but that's the only reason. The best thing you can do is to give the yeast plenty of time to do their thing, then bottle without stressing too much. This may not apply to all beer/yeast types (like those Belgians that notoriously stick at 1.02 or so), but for most of the beers that new brewers brew it's good advice. One less thing to worry about.