nent updates the needle approximately every
	1/20th of a second (note: because it uses Flash's <code>Timer()</code> this interval can be up to twice as slow if the
	frame rate is set around 20 fps, due to "features" of the setInterval implementation).  Therefore,
	if you have more than a few of these components on the stage, you may find that it slows down other processes.  If
	you need many of these on the Stage at once, you might consider rewriting this to centralize the needle update and
	need for all th