Gems Sensors, Inc. is a leading manufacturer of level switching products, suppliers of pressure switch instruments, flow switching devices, and liquid level control units for use in a broad range of fluids across the industry. Gems products feature an ever-expanding selection of sensing technologies including: electro-optic, ultrasonic suppliers of level sensors, float type, CVD, thin professional film, piezo-resonant, capacitance, hall effect and conductance products and services.