Cardinal
Product Type: Stainless Steel Gauges
Dial Size: 4"
Pressure Range (PSI/inHG/IN H2O): 30 in. HG
Cardinal CSCR Gauges, 4 in. Stainless Steel case, 316 Stainless Steel tube, 1/2" Lower Connection, Liquid Fillable, 30/0/30 HG Pressure Range, Shatterproof Window, Crimped on Bezel Ring.