The Iris 50 compass is clear evidence that a sturdy marine compass no longer needs to look austere. Good protection against hard knocks: the smooth finish feels soft in your hand and it will not slip even if it is wet. Outstanding legibility of the card with one degree graduations. No parallax error: a prism projects the reading of the bearing to infinity. This also contributes to a more comfortable operation as you do not need to alternate close-reading to read the card and infinite-reading to take bearings. Optimum conditions to take bearings thanks to the superb card stability and the wide 20 field of view which will accomodate the roughest sea conditions. Most accurate bearing : the pivot and very hard stone are a guarantee of long life and shock resistance of your compass. Soft bottom cell: engineered using ultra-somic welding it acts like an expansion diaphragm preventing the formation of bubbles and leaks. Built-in photoluminescent lighting completely maintenance-free impervious to corrosion operates without batteries or radio-active tritium. Course reading from above the compass: you can read your compass like a standard compass with no need to look through the prism Features Two functions: handbearing and traditional compass.