Moor Apparent Wind Meter...
I replaced a defunct Std Hor. wind instrument with the Moor analog wind and digital speed instrument a few years ago (price then was about $400). It has worked flawlessly ever since. I was able to reuse the in-mast wiring without having to pull in new wiring (supplied with the unit). They were the only one making a round display head unit at the time.
Joe's solution may be fine for him, but turn a gremlin loose and see what happens! :dance:
Besides, I get "True Wind Speed" every time I tack when I go head to the wind. On boats I've raced on, we've had "true wind" capability, but we've not used it. On my boat I've found that the apparent wind angle and speed were adequate determiners of when to reef/furl/tack.
Oh yeah, my GPS gives me speed over ground, and the knot meter shows speed through the water, the difference of which shows me the current.
Beyond that, I just sail!