The Weiss Series 4CTS-1, 4-1/2” Stainless Steel case gauge meets the requirements and needs of contractors in heating, plumbing, air conditioning and ventilating, and all equipment manufacturers in these fields. This series of gauges is intended for general service conditions, for pressure or vacuum on air, oil, water, gas or other mediums that do not attack brass. Steam service gauges should be protected from excessive temperature by installation of a syphon (coil type, Cat No.SY14-S iron, or SY14-B brass).