Transmissometer Indicator-Recorder

A Transmissometer Indicator-Recorder is a type of instrument used in meteorology to measure the transmission of light through the atmosphere. It is specifically designed to measure the visibility or the amount of light that is able to pass through a given distance in the atmosphere.

The Transmissometer Indicator-Recorder typically consists of a light source, a receiver, and a recording device. The light source emits a beam of light, which is then directed towards the receiver. The receiver detects the amount of light that reaches it, and this information is recorded by the recording device.

The recorded data can be used to determine the visibility or the presence of any atmospheric particles, such as fog, smoke, or dust, that may affect the transmission of light. This information is important for meteorologists and other weather professionals to accurately assess and predict weather conditions.

In summary, a Transmissometer Indicator-Recorder is a meteorological instrument used to measure the transmission of light through the atmosphere, providing valuable data on visibility and atmospheric conditions.