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4 cards from this section. Quick, good the night before a test.
Define what a bearing is in surveying.
Think about how we describe directions in everyday life.
What are the two main types of meridians?
Consider directions based on natural phenomena versus magnetic indicators.
What is a bearing in surveying?
Think about how bearings help in navigation.
True meridian is established through astronomical observations.
Consider what methods determine true positions on Earth.
A surveyor measures the magnetic bearing of line AB as 200°. The magnetic declination at the location is 15° east. What is the true bearing of line AB?
Follow the adjustment direction for declination carefully.
Two surveying points A and B are set up. A fore bearing from A to B is measured as 340° while the back bearing from B to A is recorded as 160°. Are these readings accurate?
Always check the difference in bearings when traversing.
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