describe Color: Gold Size: 132mm Test equipment tips: 1. Observe the temperature change: Place it in an environment with a large temperature difference from the ambient temperature for a period of time, and observe that the thermometer will have obvious pointer changes. For example: in the refrigerator, because the mechanical movement changes slowly, it will take longer to change slowly. 2. Observe the humidity change: You can take a deep breath at the small hole at the bottom of the back of the product, and you can clearly see that the humidity indicator changes upward, and the indicator will fall again after a period of time. < p>3. Observe the change in air pressure: due to the different air pressure in different places, the display position of the pointer is also different, and some areas may also encounter the situation where the pointer with extremely low air pressure is below the range and beyond the beach. Atmospheric pressure changes more slowly. Generally speaking, this change is evident when the weather changes from sunny to rainy or from rainy to sunny. So, if you don't see barometric needle moving, turn comparison needle to the same position as barometric needle and wait for a few days. The black pointer of the big dial is the air pressure pointer and the barometric pointer silver is the contrast pointer. The Contrast Pointer function can be adjusted to the same value. Then you can compare and observe whether the air pressure has increased or decreased over a period of time. [Three in one weather station] This product is used to measure parameters such as ambient temperature, humidity and atmospheric pressure, and accurately predict future weather changes based on changes in temperature, humidity and ambient atmospheric pressure. High-quality material The barometer frame is made of solid wood and the Housing is also made of aluminum-magnesium alloy. It has a good finish and is durable. This is a complete household weather meter. Exquisite decorationThe barometer is both a display and a barometer, beautiful and practical. Owning it is like owning an outdoor barometer, hygrometer and weather station. Easy to UseEasy to install, no plug or battery required, can be hung on the wall or placed on the counter, perfect for indoor and outdoor wall decoration. Indoor and outdoor use The barometer is suitable for all occasions, whether indoor or outdoor, and works well even at an altitude of 3000 feet, so you can use in many geographic areas.