Site Hardware Preparation
.20
Avanti Installation Manual 2.0
9. SITE ASSESSMENT AND SURVEY
9.4 USING
A
COMPASS
Compass Needle:
This arrow will always point to the Magnetic North.
This will be outlined later in more detail. Often the
compass needle is painted red so you do not mistake
the north arrow for the south arrow.
Heading Arrow:
This arrow is fixed on the base plate and it should
point in the direction that you need to look at. So
when you hold a navigation compass, always make
sure this arrow is pointed towards your destination.
I.e. The satellite.
Turntable Housing:
This top part of the Compass holds the basic
directions (north, east, south and west) and the
degrees. As we will see later on, this housing is
turntable so you can adjust your bearing to the
magnetic north.
Base Plate and Grip:
The base plate often has a ruler that can be used in
combination with your topographical map for
determining distances and triangulating your position.
The end is often shaped to form a palm grip with the
Heading Arrow pointing in the direction that you are
going.