Explain Function of Different Parts of Theodolite

A theodolite θiːˈɒdəlaɪt is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. These theodolite parts are discussed briefly below.

Component Parts Of Theodolite With Explanation Of Each Part And Functions

Digital theodolites consist of a telescope that is mounted on a base as well as an electronic readout screen that is used to display horizontal and vertical angles.

. The target is made clear by using the focusing knob on the instrument. A theodolite instrument has number of screws as its component parts. Theodolite is an instrument used in surveying to measure horizontal and vertical angles.

Digital and non digital. Calculate the height of objects through a trigonometrical levelling. Theodolite is the main equipment for a surveyorTheodolite is used for measuring horizontal vertical and deflection anglesBefore measuring these angles temporary and permanent adjustment of theodolite have to be done at the initial stageThese adjustments of theodolite have to be done to measure the correct anglesThese are important in order to.

Compass is one of the main parts of theodolite. The traditional use has been for land surveying but it is also used extensively for building and infrastructure construction and some specialized applications such as meteorology and rocket launching. In the modern instruments it embodies a shifting stage or shifting head or centering arrangement.

I to support the main part of the instrument ii to attach the Theodolite to the Tripod iii to provide a means for levelling the theodolite. It consists of a. Determine the altitude 11 12 13 14 15 16 17 18 19 and departure of given points on the ground Determine relative elevations and angular measurements for given different conditions of instruments.

Theodolite Parts and Functions. The axis about which the theodolite rotates in a horizontal plane. Electronic data collector.

The outer axis is attached to the lower plate which consists of a horizontal circle usually. The axis about which the theodolite rotates in a vertical plane. The following are major Total Station Parts and Function Electronic transit theodolite.

Digital theodolites are convenient because the digital readouts take the place. The instrument details vary with different manufacturers but the essential parts remain the same. This Digital theodolite is also known as Modern Theodolite and can perform the following functions.

Horizontal plate Circle- It is used for measuring the horizontal angle. There are two different kinds of theodolites. Digital display of point details.

The surveyor can use the total station for various purposes such as to determine the angles. Compass is used to measure the angle between the normal line and line of sight. Earlier versions of theodolites were of the non-transit type and are obsolete now.

It is also used for leveling indirect measure of distances and prolonging a line etc. The total Station accommodates the functions of a theodolite for measuring angles an EDM for measuring gaps digital data and information documentation. Vernier theodolite is the type of theodolite in which the graduated circle is read with the help of Vernier.

Eliminates the standard reading of scales on graduated circles. It can be up to an accuracy of 20 degrees. To measure horizontal and vertical angles the electronic theodolite of device is used with an accuracy of 2-6 seconds.

The total station in surveying is an instrument that is primarily designed as a combination of electronic transit theodolite an electronic distance meter EDM and software that runs on an external computer which is referred to as the data collector. Two different views of a vernier theodolite are shown in Figs 61a and b. Telescope- It is used to see the object.

It rotates about a horizontal axis in the vertical plane. The line of sight of theodolite can be rotated through 180 o in vertical plane about its horizontal axis. There are two types of the compass prismatic compass and surveyor compass.

A micrometer provides to browse the graduated circle identical be termed as a Micrometer theodolite. These work in threaded holes in the tribrach arms and their lower ends rest in recesses in the trivet. Limb or Lower Plate.

Only the transit theodolite will be discussed here. Micrometer theodolite is that type of theodolite in which micrometer is provided for reading out graduated circle. A digital theodolite consists of a telescope mounted on a base as shown in Figure-1 below.

Tripod the main part needed for a theodolite and it is used for supporting theodolite. Electronic distance meter EDM Microprocessor. Lower Plate which is attached to outer spindle carries a horizonta graduated circle it is graduated from 0-360.

Process of setting up the theodolite exactly over the ground station point. The eyepiece of the telescope is used to find the target. Storing data is an electronic field book.

Vertical Circle- It is used for measuring the vertical angle. Operate theodolite and read horizontal and vertical angle. Lower Plate Scale Plate.

A sight on the top of the telescope is used to align the target. These are classified into different types depending on their functions. Three distinct functions of levelling head are.

Non digital theodolites are rarely used anymore. I Set up the theodolite at station -point O and level it accurately. Function of different parts theodolite.

These are important surveying instruments used in the engineering and surveying disciplines especially in remote locations. Accurate measurement of angles is essential for huge construction projects. Theodolites are electronic devices that are widely used for the measurement of vertical and horizontal angles for mapping applications and in the construction industry.

Then loosen the lower clamp direct the telescope to the left hand object A and bisect A exactly by using the lower clamp and its tangent screw. These are present in the leveling head of a theodolite in between trivet and tribrach. Technical Terms Used in Theodolite.

Examples of Total Stations are the Nikon DTM 801 Topcon and Geodimeter 400 series. In case of vertical measurement of angles upward direction is taken as reference. It is an essential accessory of the Total station for providing the order to the microprocessor inbuilt in the Total station which contains different order.

Functions of Total-Station Angle Measurement. The face of the instrument should be left ii Set the vernier A to zero or 360 by using the upper clamp and its tangent screw. Parts of a Digital Theodolite.

For horizontal measurement of angles any direction can be taken as reference.

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