Profile: Promag Ltd. manufactures magnetic liquid level gauges and liquid level instrumentation products. We also offer accessories such as liquid level switches, transmitters & other liquid level, mass, density and flow devices. Our PM-26 liquid level gauge features a specific gravity as low as 0.35 and vessel liquid level indication from 6 to 720 inches. It is vibration resistant and strong magnetic attraction resists de-coupling. Pressure powered pumps operates totally from pneumatic propulsion such as steam, compressed air or gas and therefore requires no electrical installation. There are no moving parts to wear out and no seals to leak. Local indication of the volume of fluid in the tank and the ultimate control of that fluid is all accomplished with the use of magnetic field coupling.