This High Quality, Stainless Steel Temperature Gauge – With A Large, Easy-To-Read 3 Inch Dial – Precisely Monitors The Temperatures Inside The Dome Of An Egg, Allowing You To Achieve And Maintain Precise Cooking Temperatures; ; Works With 2Xlarge, Xlarge, Large, Medium, Small And Minimax Eggs ; Stainless Steel, Heavy Duty Construction, Hermetically Sealed ; Designed And Manufactured In The Usa ; Nsf Certified ; Shatter Proof Glass Face