Final answer:
The centerhold method is useful in situations where quick and easy readings are needed, such as navigating while walking or running.
Step-by-step explanation:
In the compass-to-cheek method, the compass is held against the cheek to align the magnetic needle with the direction of travel. This method is more accurate because it reduces the parallax error caused by not aligning the eye directly with the needle. However, there are situations where the centerhold method may be preferred.
The centerhold method involves holding the compass flat in your hand and looking down at it to determine the direction of travel. This method is useful when you need to take quick readings or when using the compass to navigate while walking or running.
For example, if you are hiking through rough terrain and need to frequently check your direction without stopping, the centerhold method allows for quick and easy readings. It doesn't require you to bring the compass up to your face, which can be inconvenient in such situations.