4pcs Thermometer Hygrometer Barometer Watch Clock Copper for Shell Weather Stati

1. Precision temperature sensing hairspring; Precision wet hairspring; Precision gear transmission structure barometer movement; 1 second precision clock movement; Metal pointer. 2. Readings Comparison: The contrast pin on the lens is used to compare readings to see if atmospheric pressure rises or falls over a certain period of for time. 3. Wide Applicability: Generally applicable to ships, factories, laboratories, families. 4. Easy to Install is lightweight and easy to install, suitable for hanging or placed on a surface. 5. Thermometer Hygrometer Barometer Clock only, other accessories demo in the picture is not included.