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Fill in the blank with the correct option:

__________ is used to measure horizontal and vertical angles.


1. Prism
2. Compass
3. Theodolite
4. Plum bob

1 Answer

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Correct Answer - Option 3 : Theodolite

Theodolite: For measuring horizontal and vertical angles and taking staff reading.

Explanation:

Instruments used in surveying:

Tape: For linear measurement on ground

Chain: It is used for linear measurements

Tripod: It is used for setting up the instrument on ground

Staff: For taking reading for determination of ground levels.

Clinometer: For vertical angle measurement

Abney level: It is used for measuring slopes and vertical angles.

Pantograph: Used for enlarging the plan

Ghat tracer: Used for determining of gradients

Sextant: For measuring angles from a boat

Fathometer: For measuring depth of water bodies like ocean.

Theodolite: For measuring horizontal and vertical angles and taking staff reading.

Substance bar: For horizontal distance measurement

Cross-staff range finder: To establish right angles

Parallax bar: For displacement measurement from photograph

Tacheometer: For horizontal and vertical distance computation

Planimeter: Used for area measurement

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