Dial size:2"4" Case and bezel:steel case,chrome or staintess steel bezel Window:gtass Dial size:2"4"Case and bezel:steel case,chrome or staintess steel bezelWindow:gtassStem:brass or stainless steel,steel platedThread:1/2"3/4"3/8"(BSP,BSPT,NPT)Temp range:-20°C-500°C Bimetal Thermometer Series steel case chrome or stainess steel bezel specification