Show HOW TO MEASURE HUMIDITY device that Is satisfactory Con consists sisto of combination of two ther I mo meters and vessel of water you do not have to invest in a barometer or expend your tour personal moisture by hurrying to the nearest observatory atory whether at a drug store or at a weather b er bureau to ascertain the degree of humidity from power one gets this hint the instrument in the weather bureau klosk kiosk marked relative humidity Is supposed to show the percent percentage by weight of water vapor in the air per cent being when the atmosphere can hold no more in the form of steam the maximum weight of steam that the atmosphere Is capable of holding Is dependent on and increases with an increase of the temperature the action of this hydrometer depends on the expansion and contraction in length of a hair or fiber as it increases or decreases in moisture content another device for measuring the relative humidity Is a combination consisting of two ordinary thermometers one having the bulb covered with a wet cloth or a wick extending into a vessel of water in the use of tills this instrument ment the wet bulb and the dry bulb temperatures ore are taken it if they are the same the humidity Is per cent but when there Is a difference it Is necessary to consult tables in ordel orde to obtain the relative humidity |