Used for glass fusion, it also works for temperature adjustment and timers. I think it can also be used for cloisonné and silver clay. I received it from someone who used it for dental work. It allows for fine adjustments of firing temperature and time, making intuitive settings very convenient. GC Auto Furnace with temperature control function, with analog meter for precise temperature management. - Brand: GC - Type: Auto Furnace - Function: Temperature control - Display: Analog meter - Timer: Hour/Minute setting Thank you for viewing. Please refrain from purchasing if you are sensitive to used items or concerned about minor imperfections. I have confirmed the operation of power on, heating, timer, etc., and there are no problems with use, but please understand that it is an old product. Please note that this is a one-of-a-kind item, and we cannot accept complaints or returns after purchase. We have set the price considering the shipping costs and sales commission, so please refrain from price negotiations.