Show HOW TO MEASURE device that la Is satisfactory consists Coni lit of combination of twe two ther then mo meters and veel vessel of water ton you do not have to invest in a n barometer or expend your personal moto tore by hurrying to the nearest ob tory atory whether at a drug store W at a leather bareau to the detree degree ot of humidity from rower power one gets this thie hint the instrument in the weather bureau kiosk klosk marked relative humidity li ta wip posed to show the th percentage pr by weight of water vapor in the air per cent being when th t ho tho ni enn cnn bold no more in the form of stearn the maximum weight of steam that tho the atmosphere Is capable of holding ie Is dependent on and increases u increase of the temperature ilie ac tic tiou of this hydrometer depends on the expansion and contraction in length at 0 a benir or fiber as it increases or do treaties in mol content another atice for or measuring the relative relt tire humidity la Is a combination con can allting of two ordinary thermometers one on having the tile bulb covered with abet a wet cloth or a wick extending into a ves eel of water tn the ue use of this in the wet bulb and the dry bulb temperatures are taken if they are ar the came same the humidity te to per cent but when hen thee the e 0 Is to a difference it li Is necessary to consult tables in order to obtain the relative humidity |