Baker Instruments T300 Series Stainless Steel Bi Metal Thermometer 0 to 250&deg;F (-20 to 120&deg;C), 9" Stem, 1/2" NPT Straight Connection, 3" Dial All welded stainless steel construction Easy external recalibration adjustment 3" diameter dial, dual scale (F/C) Hermetically sealed, Accurate to 1 percent as per ASME B40.5 1/2" NPT straight connection