THE DIRECT INDICATING COMPASS

#1. In a standby direct reading compass there is:

• Aa non-pendulously mounted magnet system.
• Ba single pendulously mounted bar magnet.
• Ca circular magnet or pair of bar magnets pendulously mounted.
• Da low magnetic moment system, either of circular or bar configuration.

#2. The main requirements of a direct reading magnetic compass are that it should be:

• Ahorizontal, sensitive, periodic.
• Beasily read, floating in a transparent liquid, quick to react to change in aircraft heading.
• Cpositioned directly in front of the pilot, easily corrected for magnetic deviation, aperiodic.
• Daperiodic, horizontal, sensitive.

#3. For a position in the southern hemisphere, the effect of acceleration errors are greatest on headings:

• A180 ° and 360 °
• B045 ° and 225 °
• C135 ° and 315 °
• D090 ° and 270 °