Kata thermometer measures
Kata thermometer measures ‘cooling power of air’: Cooling power of air comprises of

– Air temperature
– Humidity
– Air movement

Kata thermometer readings as indices of thermal comfort:

– Dry kata reading > 6 (Thermal comfort)
– Wet kata reading > 20 (Thermal comfort)

Nowadays it is used to record low air velocity.
Air temperature only
Air temperature, humidity and air movement
Air temperature and humidity
Air velocity only
Air temperature, humidity and air movement