D3808 Analog Panel Mount Thermometer Vapor Actuated -40 Degrees to 120 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.-40 Degrees to 50 Degrees Temp Range (C) Accuracy +/-2 Percent Standards NSF Certified