What is double plane method?

References & Related Literature. Double-Plane Method. An interesting variation of the DLT algorithm is the double-plane method originally used by Drenk et al. (1999). This method is based on the 2-D DLT algorithm and involves two parallel control planes (Figure 1).

What is the aim of single plane method using theodolite?

Aim: To find out the Reduced Level (R.L.) of inaccessible elevated point by Trigonometrical Levelling.

What is theodolite used to measure?

theodolite, basic surveying instrument of unknown origin but going back to the 16th-century English mathematician Leonard Digges; it is used to measure horizontal and vertical angles. In its modern form it consists of a telescope mounted to swivel both horizontally and vertically.

Where is theodolite used?

A theodolite is a precision instrument for measuring angles in the horizontal and vertical planes. Theodolites are used mainly for surveying applications, and have been adapted for specialized purposes in fields like metrology and rocket launch technology.

What is theodolite used for in land surveying?

The theodolite is an instrument that can measure both horizontal and vertical angles, which allows surveyors to “triangulate” the position of objects in a specific area. While the digital and transit theodolite have been used by land surveyors and engineers, they can be used for other purposes as well.

What is application of theodolite?

MeteorologyRocket launch

What are the types of theodolite?


Who found theodolite?

mathematician Leonard Digges
The theodolite was invented in the sixteenth century. Its precise origin is unclear, but one version was invented by English mathematician Leonard Digges in 1571, who gave it its name. A great theodolite was invented by Jesse Ramsden more than 200 years later in 1787.

How is theodolite used to measure elevation?

Drive the tripod legs into the ground using the brackets on the sides of each leg. Mount the theodolite by placing it atop the tripod, and screw it in place with the mounting knob. Measure the height between the ground and the instrument. This will be used a reference to other stations.

What are two types of theodolite?

What is Theodolite and its Types?

  • Repeating Theodolite. Repeating theodolites refer to those theodolites which measure angles on a graduated scale.
  • Direction Theodolites. Direction theodolites refer to those theodolites which determine angles through a circle.
  • Vernier Transit Theodolite.
  • Solved Question For You.

What is the theodolite and explain the any two types of theodolite with diagram?

Primary Theodolite can be two types. Transit Theodolites: A theodolite is named a transit theodolite once its telescope will be transited i.e. rotated through a whole revolution regarding its horizontal axis within the vertical plane. Non-Transit Theodolite In this kind, the telescope cannot be transited.

What is theodolite and how does it work?

What is Theodolite? Theodolite is a measurement instrument utilized in surveying to determine horizontal and vertical angles with the tiny low telescope that may move within the horizontal and vertical planes. It is an electronic machine which looks sort of a tiny telescope.

What is the difference between transit theodolite and non-transit theodole?

Transit Theodolite: A theodolite is called a transit theodolite when its telescope can be transited i.e revolved through a complete revolution about its horizontal axis in the vertical plane. Non-Transit type, the telescope cannot be transited. They are inferior in utility and have now become no longer in use.

How do you measure the angle of a theodolite?

Level the theodolite using altitude level (the operations involved are same as leveling using plate level). Loosen the vertical circle clamp, and direct the telescope towards the object whose vertical angle is required to be measured. Clamp the vertical circle, and bisect the point by turning the vertical tangent screw.

What is the difference between vernier theodolite and micrometer theodolites?

Differentiate between the Vernier theodolite and Micrometer theodolite. In Vernier theodolite the verniers are fitted to read the angles upto 20′. In Micrometer theodolite micrometers are fitted to read the angles. 5. List the essential qualities of a theodolite telescope.