Steering compass Beta I - black casing and black card - 5° division - built-in type Professional steering compass for use on coastal commercial vessels and yachts. With white card 2/1° division. Each compass individually tested and certified. - Internal half gimbaled - Black/white card with 5°- division or white card with black 1°-division - Temperature stabilized -30° C ... 60° C .- Yachting type with six lubber marks for parallax free reading from different directions - Shadow pin (only yachting type) - Dazzle-free illumination 12 or 24 VDC - Seawater resistant coated brass casing - Polished mineral glass dome