A theodolite in which the telescope can be revolved through a complet...
A theodolite is said to be transit one when its telescope can be revolved through 180° in a vertical plane about its horizontal axis, thus directing the telescope in the exact opposite direction.
Hence, the correct option is (C)
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A theodolite in which the telescope can be revolved through a complet...
Transit Theodolite
A Transit Theodolite is a surveying instrument that is used to measure horizontal and vertical angles. It is a type of theodolite in which the telescope can be revolved through a complete revolution in a vertical plane. It is also known as a transit because the telescope can be transited or turned over in the vertical plane.
Features of Transit Theodolite
- The telescope of a transit theodolite is mounted on a horizontal axis and can be rotated 360 degrees in the horizontal plane.
- The telescope can also be tilted up and down in the vertical plane, allowing for the measurement of vertical angles.
- Transit theodolites are commonly used in construction, engineering, and surveying applications where precise measurements of angles and distances are required.
- They are typically more accurate than non-transit theodolites because they allow for the measurement of both horizontal and vertical angles.
Uses of Transit Theodolite
- Transit theodolites are used in surveying to measure horizontal and vertical angles, which are used to determine the locations of points on the ground.
- They are used in construction to determine the locations of structures and to ensure that they are built to the correct specifications.
- Transit theodolites are also used in engineering applications to measure angles and distances for the design and construction of roads, bridges, and other infrastructure projects.
Conclusion
Transit theodolites are an important tool in surveying, construction, and engineering. They allow for the precise measurement of horizontal and vertical angles, which are essential for determining the locations of points on the ground and for ensuring that structures are built to the correct specifications.