UK Advance Tariff Rulings
 HS Code : | 9015.20 | |
|---|
 HS Code : | 9015.20.••.•• | |
|---|
Ruling Number :
Date Of Issue : 02.Dec.2024 - 01.Dec.2027
Digital theodolite for precise angle measurement in horizontal and vertical planes, used in surveying and antenna alignment
Description : A theodolite which is a precision optical instrument used for measuring angles in both the horizontal and vertical planes. 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 instrument combines the functions of an optical plummet and a spirit level by incorporating a set of graduated circles that can be used to determine horizontal and vertical angles, which are needed for surveying. During antenna installations, theodolites are essential for precise angle measurements, ensuring proper alignment and calibration and they are critical for ensuring optimal signal reception and transmission. Parabolic antennas are highly sensitive to precise alignment as a smooth, well-formed parabolic surface is necessary to direct the radio waves precisely toward the focus point or to receive signals from a focused source. The design of the parabolic shape allows radio waves to be reflected to a single focal point where a feed antenna is located. If the surface is uneven or distorted, the reflected waves will not converge properly at the focus, leading to signal loss, reduced antenna efficiency, and poor communication performance. After the initial antenna installation, theodolites are used to inspect the symmetry of the reflector by measuring the angles and ensuring the surface curvature is formed exactly as required. If any part of the reflector is warped or misaligned, fine adjustments can be made to the panels to achieve the desired surface accuracy and ensure optimal signal performance. The theodolite is shipped within a purpose built protective hard case with foam insert.
Source : UK Advance Tariff Rulings
source link :