In this article, we will try to introduce the equipment used and useful in the greenhouse in 12 parts and review the important points in their preparation and use. In this section, we will introduce humidifice.

It is a device that records the changes in relative humidity of the air on a particular screen. The device is composed of a hair warp that is shortened or longer with moisture changes. A lever is attached to this warp. This lever leads to a stability pencil. There are other ways the device starts a cylinder that slows down after tuning. This cylinder makes a full round every day. On the rotating cylinder, a checkered paper plate is installed that can be replaced.

The stability pencil is placed on the screen and by moving the cylinder draws lines in a curve after a day and night can be referred to the device and the humidity fluctuations of the environment from the curves drawn in the last day and night can be obtained.