The Kata Thermometer :- The Kata Thermometer consists of an alcohol thermometer with a large bulb A 4 cm. long and 2 cm. In diameter and a stern 20 cm. long. graduated only at two points namely 38°C and 35°C It may be used for dry or wet. For wet Kata Cooling power reading the bulb Is first placed In hot water so that the liquid rises and partly fills the upper reservior C. It Is then exposed to the air.