PROTREK's Bearing Sensor lets you locate yourself on an area map by plotting lines from two fixed distant landmarks. Begin by orienting the map with the Bearing Sensor. Next, select two mountains or other landmarks you see in the distance. Now use the Bearing Sensor to measure the angle of these points with respect to magnetic north* and draw lines on the map along these angles. The point at which the lines intersect will be your approximate current position. *Note that magnetic north, detected by the Bearing Sensor and other magnetic compasses, differs from true north.
A graphic display of barometric pressure readings taken at regular interviews reveals the pressure trend at a glance. When the pressure is rising, the weather is likely to improve; when it's falling, there's usually worse weather ahead. This feature can remind you to take your swimming suit along, or alert you to approaching trouble.
The higher the altitude, the lower the barometric pressure. Changes in altitude are displayed as positive or negative values with respect to an altitude you input in advance.
The temperature generally decreases by approximately 6.5°C with every increase in altitude of 1,000 meters, or 3.6°F with every increase of 1,000 feet. If the temperature at 1,000 meters is 10°C, therefore, the temperature at 3,000 meters will probably be about -3°C.
Those who fish the ocean regularly agree that the best fishing can be expected at about the change of the tide from flood to ebb. By keeping you posted on the moon age and the ebb and flow of the tides, the Tide Graph helps you to select the best time and way to fish, supporting your creation of an effective fishing plan. As you acquire more and more experience, you shouldn't be surprised if you start bringing home a better catch than the old salts.
Winter Catalogue 2008
