V-Line Thermometer For heating, plumbing,air conditioning and ventilation applications V-Line Thermometer Specifications Dial4.5"(110mm),6"(150mm),8"(200mm) CaseAluminum,anodized gold Liquid FillingOrganic Liquid (Red / Blue) StemBrass / st/st Swivel NutBrass / st/st Connection1/2" BSP / NPT Range -40-110F/C,20/180F/C,30-240F/C, 30-300F/C,50-400F/C Accuracy±2%V-Line Thermometer For heating, ...