Hygrometers determine the relative humidity in the air. These devices are delicate and need to be calibrated so that they prove accurate results. Hygrometers are easy to use and are also called humidity sensors.

If you have a Weather Instrument & Weather Meter at home, you can determine whether your home has too much or too little humidity. Once you find out, you can take steps to adjust it. If the relative humidity in your house is too low, you can raise it. If it is too high, you can reduce it.

There are devices where you can measure both humidity and temperature, making them a hygrometer-cum-room-thermometer.