Ravensgate Corporation Located in Ridgecrest, California, specializes in manufacturing and marketing a unique water level measuring device. For more than two decades, Ravensgate Corporation has been a trusted partner to the well drilling industry, providing more than 3,200 Sonic Water Level Metering devices. Our clients can be found in 49 of the 50 United States, as well as in a number of other countries, including Canada, Australia, South Africa, and Yemen. With more than forty years of experience in the electronic design of test and instrumentation systems and airborne military equipment, we are well-equipped to meet the needs of our customers.