Package Quantity:1 Product advantages: Convenient to be placed, a magnet on the back allow stove flue pipe thermometer to be placed on stove top or side. Sturdy material consist of aluminum dial, bimetal sensor, brass pointer, metal handle, sturdy and easy to operate. Changing of different temperature: Creosote buildup indicates temperature is too low which can cause creosote and tar deposits in the stove and chimney. Optimum performance indicates the fuel consumption and heat output are at its most efficient level. Overheat indicates temperature is too high, risks of stove/ chimney/ stove fan being damaged. Specifications: Measuring range: 100-900 ℉/100-500 ℃ Color: as shown in the picture Material: aluminum dial, bimetal sensor, brass pointer and metal handle Dial size: 2.45 inch/ 6 cm in length