It is a stainless steel, analog dial thermometer.
The thermometer can measure temperatures in both Fahrenheit and Celsius scales, ranging from 100°F to 600°F (approximately 38°C to 316°C).
It is designed to be either hung from an oven rack or free-standing on the oven floor.
This kind of thermometer can be used in traditional ovens, toaster ovens, grills, and smokers.