HandBearing: Marine Compass

The compass apps on your phone show a dial from above, as if the phone lay flat on a chart table. A real hand bearing compass works differently: you hold it up at eye level, sight your target over it, and read the bearing off the side of a floating vertical card. HandBearing puts that instrument on your screen. SIGHT AND READ - Hold your phone up and aim at a lighthouse, a buoy, a vessel or a peak - The vertical card turns behind dome glass, damped like the real liquid-filled instrument, and the lubber line reads your bearing - True or magnetic reference, with the reciprocal bearing always at hand - Lay the phone flat and the same card shows its top face, a round compass rose; tilt it in between and you see both, because it is a cylinder MARK IT - One tap records the bearing with the time, and your position if you choose - Keep a log, label each bearing and share it as plain text - HOLD…