(a) Below are given the observed bearings of the lines of a traverse…

Question

(a) Below are given the observed bearings of the lines of a traverse ABCDE with a compass in a place where local attraction was suspected. Find the correct bearings of the lines :

| Line | Fore Bearing | Back Bearing |

| :--- | :---: | :---: |

| AB | $191^{\circ} 45'$ | $13^{\circ} 0'$ |

| BC | $39^{\circ} 30'$ | $222^{\circ} 30'$ |

| CD | $22^{\circ} 15'$ | $200^{\circ} 30'$ |

| DE | $242^{\circ} 45'$ | $62^{\circ} 45'$ |

| EA | $330^{\circ} 15'$ | $147^{\circ} 45'$ |

(10)

(b) Explain the loose needle method of traversing with a compass. (10)

Related pages

• Local attraction — topic
• SURVEYING-I syllabus