Precision temperature sensing with a hairspring system including a wet hairspring and gear transmission movement. 1 second clock movement and a metal construction. Readings comparison feature: The contrast pin on the lens allows you to compare readings and observe whether atmospheric pressure rises or falls over time. Wide applicability: Generally suitable for ships, factories, laboratories, and homes. Easy to install: Easy to install and suitable for wall hanging. Use scenarios - In a laboratory or workshop, monitor temperature and atmospheric pressure trends during experiments or storage. - On a ship or in a factory, track ambient pressure changes to assess weather patterns or process conditions. - at home or in a greenhouse, observe daily climate changes for weather awareness and environmental planning.