The British also had developed a device called a ceilometer, which triangulated ultraviolet rays to calculate how low clouds were over the three Berlin airports. From Wordnik.com. [Daring Young Men] Reference
Vaisala launches new ceilometer for high range cloud detection. From Wordnik.com. [WebWire | Recent Headlines] Reference
The Remote Miniature Weather Station (RMWS), from System Innovations, is an air-droppable version with a lightweight, expendable and modular system comprised of two components; a meteorological (MET) sensor and a ceilometer (cloud ceiling height) with limited MET. From Wordnik.com. [Citizendium, the Citizens' Compendium - Recent changes [en]] Reference
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