[Retro] TAINEI Thermometer and Hygrometer HD-201 1983

analog indoor thermometer and hygrometer, likely a vintage model, used for measuring both temperature and humidity.  Thermometer: The left dial displays temperature in Celsius, ranging from -30°C to 50°C.  Hygrometer: The right dial measures relative humidity in percentage, ranging from 0% to 100%.  Purpose: These devices are commonly used in homes, offices, or other indoor environments to monitor comfort levels and ensure optimal conditions for health or specific items like instruments or plants.  Features: This particular model has a clear, easy-to-read display with large numbers and a sturdy base for desktop placement.