Compass

Terms

• Direction
  • Cardinal N, E, S, W and
  • Ordinal directions NE, SE, SW, NW
  • Quadrant bearing – like N35°E or S15°W
  • Azimuth
• Parts
  • Baseplate
  • Ruler/scale
  • Rotating graduated dial/Bezel
  • Declination scale
  • Magnetic needle
  • Direction of travel arrow/indicator
  • Magnifying lens
  • Index line
  • Orienting arrow
  • Meridian lines
  • Mirror
  • Sighting notch
  • Shed
  • Lanyard
  • Declination adjustment tool
  • Inclinometer
• Skills
  • How to hold the compass to
    • Measure azimuth to a distance object
    • On a printed map
  • Determine magnetic variance for your locale
  • Set magnetic variance/declination on compass
  • Measure azimuth by sighting a distant object
  • Orient a printed map
  • Measure azimuth on the map
  • Determine a location using resection
• Related skills
  • Use a ruler/scale to estimate location on a printed map in formats of UTM and L/L
  • Estimate a distance between two points on a printed map
  • Determine slope angle

Reference

http://geokov.com/education/compass-directions-azimuth.aspx