WIKA #52962420 BIMETAL THERMOMETER. 100 A 400 � C 4 "VAST9" Type: Bimetallic-High pressure gauges with stainless steel housing, Bimetal thermometer, Process-Industry-Series Specifications according to data sheet: TM 55.01 Case: stainless steel Stem Material: stainless steel Model: S 5550, nominal size 100, adjustable stem and dial Visor, Accuracy Class: class 1 per EN 13190 Design of Connection: 4, compression fitting, sliding on stem Unit: �C Scale Range: 0 �C ... 400 �C Process Connection: 1/2" NPT Stem Diameter: 6 mm Stem Length: 229 mm Diameter: 100mm or 4 in. Dial Color: Black Labels, White Background Visor Material: Safety Glass Case and Sheath Material: SS316 Range: 100 to 400 � C