Veratron 4-3/8" (110mm) AcquaLink® Speed Through Water 12 Knots - 12/24V - Black Dial & BezelThe 110 mm Speed Gauges display information received from the AcquaLink NavBox or the NMEA 2000 data bus. 4 3 8" (110mm) AcquaLink Speed Through Water 12 Knots 12 24V Black Dial & Bezel The VDO Marine 110 mm Navigation Gauges display wind speed and angle information received from the VDO Marine AcquaLink NavBox or the NMEA 2000 data bus. For the 52mm gauge, each the dashboard not only requires a series of round, beautiful faces this is where the VDO