Indication Range: -40°C up to +600?C Case Nominal Diameter: 21/2", 3", 4", 5", 6" Case Material: Mild Steel; Stainless Steel Immersion Tube Diameters: ?6mm to ?12mm Immersion Tube Length: 21/2" to 24" Connection: Bottom Connection Inlet Thread: 1/2", 1/4",1/8", 3/8", BSP, BSPT, NPT or according to customers requirements Material For Immersion Tube and Thread: Brass, Steel, Stainless Steel Accuracy: 1.6-1%