New Knotmeter, wind indicator

[Starboat]

I have a knotmeter/wind indicator instrument with the name "Magnum 33"....has anyone heard of this instrument package? I cannot find any indication of such an instrument (that is probably 20 years old) and the dealers around here (Seattle) have never heard of it either. The masthead sensor died a few months ago and needs to be replaced.

If I cannot replace the masthead sensor, I plan to replace both the knotmeter and wind indicator. I am considering a Signet Marine SL267 digital knotmeter and SL254 wind indicator, or Raymarine ST60 instruments. With the Signet Marine indicator, I will not have to replace the paddlewheel through-hull....just the sensor (that can be done without pulling the boat). The prices seem to be comparable. Any experience and/or advice?

Thanks.