GMI 20 Marine Instrument DisplayPerfectly Designed for Power Sail VesselsThe GMI 20 digital marine instrument display is perfectly designed for both power and sail vessels. Designed to clearly show depth, speed, wind and 100 marine and vessel parameters, its large, bright 4 color display with extra large digits is easy to read at a distance and 170 degree viewing angle.A glass-bonded finish lens prevents fogging and increases contrast. Daylight readability is enhanced with a high contrast color