In my experience, a red wine, which is not clear, has sort of a cloudy appearance in the glass, when you look down into the glass from the top.
Also, as long as it is dropping sediment, it is not finished clearing. If you think it is clear, rack it and let it set 3 or 4 more weeks, then check for sediment. Don't get into any hurry.
Typically, if you use clearing agents and wait the proper amount of time called for, it should be pretty clear. Of course this is not always the case.
Put it in a glass and check it out.