Oklahoma Joe's 2-Pack Surface Temperature Gauges. These gauges offer precise reading by placing them directly on the cooking surface. They feature a 3" gauge face and a removable clip for easy lifting with a spatula when hot. Compatible with Big Green Egg, Charcoal, Electric, Extra Large Grill/Smokers, Kamado, Kettle, Natural Gas, Pellet Grill, Portable Pizza Oven, Propane, and Wood Fire Oven.