Explorer Surface Mount compasses feature a 2 3⁄4 ́ ́ (70mm) direct read dial and are available in White, Gray and Black. It is the Owner/Operator and/or Helmsman ́s responsibility to make sure the compass is properly installed and compensated. Compensation is the act of correcting ...Explorer Surface Mount compasses feature a 2 3⁄4 ́ ́ (70mm) direct read dial and are available in White, Gray and Black.
It is the Owner/Operator and/or Helmsman ́s responsibility to make sure the compass is properly installed and compensated. Compensation is the act of correcting for deviation. Magnets (speakers, microphones etc.), ferrous metals (steel, iron, etc.) and current carrying devices are common causes of deviation.
It is important to understand that magnetic compasses point toward Magnetic North. There is a difference between Magnetic North and True North, and that difference is called variation. Variation differs depending on your geographical location and can be determined by referring to a local chart.