Millennium Instruments Ltd. Manufactures Glycerin Filled Pressure Gauges. Millennium Instruments Ltd. Is an ISO 9001:2000 certified company that also offers products like Temperature Instruments, Flow Instruments, Level Instruments, Master Instruments, Digital Instruments etc.Glycerin Filled Pressure Gauges are suited for all kinds of process industries & OEM`s. The Glycerin Filled Pressure Gauges have a sensing element of "C" Type Bourdon Tube and comes in IP65 housing. The Glycerin Filled Pressure Gauges have an accuracy of 1.6% / 1% of full scale range.