A crazy question for y'all...

I know my older fly line is a DT 6 weight.

However, I'm almost positive that a reel I purchased recently has WF 5 weight on it, but I'm not sure. What's the easiest way to tell if I've got a 5 wt. line and that it's not another 6 wt. line?

Same with making sure it's WF vs. DT?

Thanks.