Detailed Product Description Bimetal ThermometerRange: -40~600 celsius degree Case: stainless steel, steelDiameter: 1-1/2",2", 2-1/2", 3", 4", 5",6"Inlet thread: 1/8", 1/4", 3/8", 1/2", NPT ,BSPT, BSP or according to customers orderConnection: stainless steel. center back male connectionStem diameter(mm):Ø6-Ø12Stem length:2-1/2" ~24" or according to customer orderAccuracy: 2%, 1.6% ,1%