Wilder T4 astronomical theodolite
"Wilder T4 astronomical theodolite" is a high-precision angle measuring instrument designed for astronomical observation. It is mainly used to determine the position, trajectory and atmospheric refraction of celestial bodies (such as stars, planets, comets). In its name, "Wild" usually refers to the manufacturer of traditional astronomical instruments in Germany or Switzerland. "T4" is the model code and represents its technical iteration version. "Astronomical Theodolite" defines its core function-to realize precise measurement of azimuth and altitude of celestial bodies through telescope and dial system.
Nineteenth-century 10-inch theodolite
Early twentieth century measuring instruments antique theodolite
Triangulation theodolite made in 1902
The triangulation theodolite is a precision measuring tool used to measure horizontal and vertical angles, especially in the field of geographic mapping and engineering. The triangulation theodolite of 1902 is the representative of the advanced surveying and mapping technology at that time, with higher accuracy and stability.
Eighteenth-century measuring instrument theodolite
A theodolite is a precision instrument used to measure horizontal and vertical angles. It was made in 1752 and is commonly used in geographic mapping and engineering. Theodolite belongs to the early measuring instrument, which is very precise in design and technology, which laid the foundation for the later measuring instrument. In the 1752 theodolite, craftsmen used precision machining techniques to ensure the accuracy of the measurement. These early theodolites played an important role in geographic mapping, engineering construction and astronomical research, helping people to accurately determine position and angle.
19th century instrument portable travel theodolite
Antique astronomical theodolite
Theodolites are measuring instruments designed based on the principle of angle measurement to measure horizontal and vertical angles. They are divided into two types: optical theodolites and electronic theodolites, with the most commonly used being electronic theodolites. The theodolite is the mechanical part of a telescope that allows it to point in different directions. The theodolite has two mutually perpendicular axes to adjust the azimuth and horizontal height of the telescope. A theodolite is a type of angle measuring instrument equipped with a sighting section, a horizontal dial and reading indicators, and a vertical dial and reading indicators.
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