Plastic is the high quality plastic, mercury thermometer, another glass as the main materials of the products, this product is made with plastic, glass, and mercury color for the Monkey King modelling in it in the middle of the card with calibration precision thermometer, test scope for 20-50 degrees Celsius, and the humidity of 0-120. It can be hung on the wall to measure the temperature and humidity in the room, and it can be adjusted for use in nursery, greenhouse, culture room and other places.