1.Versatile indoor and outdoor applications: suitable for a variety of environments, including houses, gardens, outdoor activities such as hiking and fishing, reptile habitats, cigar cases, fruit and milk storage, storage of clothing, as well as cultural institutions such as libraries, art galleries and museums, this barometer is designed to be a wide array of indoor rates and hygrometer. 2.3in1 barometer: This 3in1 barometer measures not only atmospheric pressure but also temperature and humidity. With a temperature range of 2060 ℃, humidity range of 0 to and a pressure range of 9801050 PSa, it broad functionality with high accuracy (temperature ± 3 ℃, humidity ± 5%) to ensure precise and comprehensive environmental measurements. 3.Compact and elegant design: Measuring approximately 13.2 x 13.2 x 4.3 cm/5.20x5.20x1.69 inches, this barometric pressure gauge features a compact and elegant appearance with a mechanical movement, eliminating the need for batteries and ensuring convenient use. 4.Clear scale and versatile mounting options: The weather barometer has a clear scale for easy and accurate reading as well as a comparison needle for observing pressure changes. The back design includes a hanging hole for wall mounting as well as the option for recessed installation with a recommended installation diameter of 108118 mm.