Steroids and other medications. Long-term use of oral or injected corticosteroid medications, such as prednisone and cortisone, interferes with the bone-rebuilding process. Osteoporosis has also been associated with medications used to combat or prevent: Seizures; Gastric reflux; Cancer; Transplant rejection; Medical conditions
The main functions of using a compass are: 1  tell which direction you are traveling - your heading. 2  tell which direction an object is from you - its bearing. 3  keep you following a straight line of travel. 4  orient a map - aligning a map with the actual land.  triangulation - determining your location with a map.
There are a few ways to solve this extra challenge of finding true north-either changing your compass or using math in your head. On many compasses, you are able to adjust the declination by twisting a ring, using a screw, or some other method of changing where the orienting arrow sits in relation to the ring.ot only that, but there are southern hemisphere and northern hemisphere compasses. I have an old Forest Service compass that you can see here. It has a weight on the southern end to offset the inclination pull in the northern hemisphere.