12” / 30.5 cm easy to read temperature dial makes a nice addition to your backyard or shed. It accurately displays the outside temperature in Celsius and Fahrenheit.The BIOS Weather product line is the most extensive “Weather Program” on the market. It ranges from the most technically sophisticated consumer devices to reproductions of some of the most historical weather instruments ever designed. The BIOS Weather brand offers a comprehensive line of state of the art weather thermometers and instruments, both analog and digital. The BIOS brand is synonymous with accuracy, reliability, and innovation.