The meteorological department of the government collects data on the elememt of weather such as maximum and minimum temperatures, maximum and minimum humidity, rainfall , wind speed, etc. they are able to study these elements using various instruments. The maximum and minimum temperature of a day is meausred by a thermometer known as the maximum thermometer. Rain fall is meausred by an instrument know as the gauge. Wind speed is meausred by anemometers . There are various instruments used to measure humidity
