2 in 1 Temperature Humidity Gauge Analog Hygrometer 58mm Diameter for Schools Shopping Malls Warehouses High-accuracy

Features: The outer casing is made of aluminium alloy, is compact, robust and durable. Mechanical thermometer and hygrometer, no battery required. With fine and clear dial scale, easy to read. Aluminium alloy mini hygrometer thermometer for indoor and outdoor use. Suitable for homes, offices, workshops, schools, shopping malls, warehouses, etc.