Completely stainless steel vacuum gauge (case, mechanism, tube and process connection) with glycerin for vacuum, dual scale -30 inHg (-76 cmHg), can be used in milking equipment and vacuum pumps. The box is 2.5-inch stainless steel, 1/4" NPT rear connection, polycarbonate window. SERVICE HOURS Monday through Friday from 9:00 a.m. to 6:00 p.m. SHIPPING POLICIES If you purchase the product before 1:00 pm, your shipment will be made the same day, otherwise the shipment would be made the next day (as long as it is working) SPECIAL MANUFACTURING AND DESIGNS Ask our executives about special manufacturing (print your logo on the cover, special materials or connections, etc.)