Raymarine T060 Microcompass – magnetic fluxgate compass; also can store a boat’s tacking angle.
Raymarine T070 Racemaster – magnetic fluxgate compass; also can store mean wind direction, a boat’s tacking angle and a start line perpendicular. The same unit can communicate via the Raymarine Micronet Wireless network to optional depth, wind, speed or (via an NMEA wireless transmitter) to wired sensors such as GPS. The Racemaster cannot give time on distance to a start line unless it is networked with a GPS.
Both have functions that if used would be outlawed under the new rules. IMHO if you can’t enforce a rule, it’s hardly worth the paper it’s written on.