NK0808多功能指南针为风速气象仪专用多功能指南针，美国NK气象指南针 | Silva Starter 1-2-3 Compass | | This compass has 2° graduation lines as well as large numerals at every 20° mark, and its clear base plate makes it easy to read a map and set bearings. To get a precise wind direction, simply point the large base plate arrow into the wind, turn the bezel to match the red North indicator to the red needle, and read the wind direction at the base plate arrow. This full-featured compass has a declination correction scale to allow you to make quick adjustments of map bearings to field headings, a sure-grip dial and ergonomically-contoured base plate, includes inch and millimeter rules for mapping and plotting. | | 
|
