Kata Thermometer

An alcohol thermometer used to measure air speed or atmospheric conditions by means of cooling effect.
Found on http://www.encyclo.co.uk/local/20474

kata thermometer

(from the article `anemometer`) ...of airspeed, and a meter in the electrical circuit of the hot wire can be calibrated to indicate airspeed. This device is useful for very low ...
Found on http://www.britannica.com/eb/a-z/k/15
No exact match found