D3808 Analog Panel Mount Thermometer Vapor Actuated 40 Degrees to 240 Degrees Temp Range (F) Dial Size 2 In. Mounting Front Flanged Tube Length 48 In. Case Material Stainless Steel Lens Material Polycarbonate Tube Material Nickel/Tin PlatedSensor Length 3.6 In. Sensor Dia 0.375 In.5 Degrees to 115 Degrees Temp Range (C) Accuracy +/-2 Percent Standards NSF Certified