Cleveland Controls AFS 952 55 B Air Pressure Switch, Adj, Auto Reset, 0.03 in wc to 12 in wc, NEMA 1 Enclosure, SPDT, NPT, 120V AC 68514412006 Hardened V Grooved Jaws holds Hardened V Grooved Jaws holds round shaped objects both Vertically and Horizontally Jaw Material Cast Iron Base Material Cast Iron Lead Screw Type ACME Jaw Opening Maximum 8 in Machine Vise Type Low Profile Compatible Machinery Drill Press Jaw Face Type V Grooved 2 psi Gauge Sensor Material 316 Stainless Steel Socket Material 316L Stainless Steel Pressure Range 0 to 30 psi Case Material Phenolic Process Connection 1 2 in NPT Male Standards ASME Mounting Orientation Vertical Contact Form SPDT