73R the perfect combination Optimist compass. It is used throughout Europe. It can be installed in any inclination or position with a bracket that allows for fast and easy removal. The handle makes it useful as a sighting compass, simply remove the compass and sight the mark to determine the bearing. Tactical compass scale on the vertical part of the card. 73R is also easy to remove to prevent thefts when the boat is not used. Detecting windshifts may be the tiny difference between winning and loosing. The tactical scale grades from 0-20 and the figures correspond on port and starboard tack. If the reading on star-board tack is 2 the reading on port after tacking should be 2. In this way you only have to remember one figure: 2. This is a great bene-fit in triangular course sailing where you want to detect the wind-shifts, not your actual course.
