Quick Answer
While a GPS device can provide navigation assistance, it's not a suitable replacement for a compass in every situation, especially when satellite signals are weak or unavailable, and a compass is more reliable for determining direction.
When to Use a Compass
A compass is a more reliable tool for determining direction when the GPS signal is weak or unavailable. This can be due to dense foliage, urban canyons, or being in an area with poor satellite coverage. A compass can still be used to determine direction based on the Earth’s magnetic field, making it a more reliable option in these situations.
How to Use a Compass with a GPS
When using a GPS device with a compass, it’s essential to consider the declination of the compass, which is the difference between the magnetic north and the geographic north. This can range from 0-20 degrees, depending on your location. To ensure accurate navigation, you should adjust the compass declination based on your location. For example, if you’re in the United States, and your local declination is 10 degrees, you should adjust the compass to point the red end of the needle towards the magnetic north. This will help ensure that your compass readings are accurate and consistent with your GPS device.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.