Universal solar ring for astronomical instruments in the eighteenth century
This instrument was manufactured around 1760 and was one of the most advanced astronomical measurement tools of the time. By using the Universal Dayring, astronomers can accurately measure the position of the sun during the day to determine time and orientation. This instrument was widely used in the 18th century to help astronomers with celestial observation and navigation.
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.
nineteenth century instrument mapping surveying compass
The measuring compass was made around 1820. This is an instrument used to measure and map terrain. The measuring compass combines the functions of a compass and a measuring instrument and can measure angles and orientations for mapping and location determination. At the beginning of the 19th century, this instrument was widely used in geological exploration and engineering survey. This instrument was designed to make precise measurements in the field environment and was an important tool for geologists, engineers and surveyors at the time.
Milwaukee tape measure
It is a series of high-quality measuring tools produced by MilwaukeeTool companies, specially designed to meet the needs of professionals. Respected for its sturdy structure and high precision, it is very suitable for heavy engineering survey and various construction and measurement needs. Features include durable construction, clear scale markings and accurate measurement capabilities, which make it a standing tool on the construction site. The design focuses on user experience, provides a variety of innovative functions, and is also equipped with a two-color ruler and rubber sheath. These designs not only protect the ruler from damage, but also ensure the long-term service life of the tape measure.
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.
3D model of pressure gauge
A pressure gauge is an instrument used to measure air pressure, which can be classified into many types. Among them, a tire pressure gauge is a type of tire pressure gauge, which consists of a head, piston, body, ruler, main spring, etc. The head only has one pressure measuring port, with a simple structure, small range, high accuracy, and easy use. It is suitable for measuring tire pressure in small vehicles such as micro cars and motorcycles.
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