Material: Acrylic
Size: 128 * 60 * 17mm
Sling: about 50cm
Function: magnifying glass, compass, scale (0-120mm), scale (1: 50000,1: 25000), small round and triangular
Join compass of kerosene, with added pressure, can increase the stability of the pointer
in cold regions (the coldest at minus 20 degrees) internal compass does not produce bubbles, high temperature at 40 degrees will not epand.
special map compass, pointer stable correct.
Use:
1. Location compass: rotating surface until the red compass face plate with a north arrow marked overlap in a straight line, then you"re going to read the azimuth angle direction of the north formed from compass.
2. On Location Location: in the absence of latitude and longitude or grid map marked with the compass face plate of a north arrow marked 0 angle of rotation to the center line of the base into a line, on the map and compass FIG side edge in a straight line, and then rotate the map so that a north arrow marked with red compass pointing in the same direction overlap, then you map is the direction of the magnetic north.
3. How to use a compass to find the point of view of the route map: When traveling between, but I do not know know the destination direction - first to locate map north, and to find the location of the destination, a straight line connecting strokes, will refer to North pin the long side on the plane of rotation of the disc until the red line and below refers to compass north arrow marked overlap to read the destination path angle.
4. How to follow the right direction: setting the path angle, be sure to maintain the disk and do not move, and align an obvious target for the face plate is rotated in the direction of travel, when red compass and a north arrow marked overlap, ie positive target front.

Compass with scale * 1 (* 1 with slings) bubble bag + color bo packaging