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The model C820 Shallow Water is a highprecision submersible tiltmeter for use in fresh and salt water applications with 4-20mA output. Using an absolute gravity referenced electrolytic sensor, the C820 delivers superior measurement accuracy with virtually no longterm drift. High-gain units are sensitive to <0.0017 mm/m or better. All units are rated to 200 meters (656.2 ft) waterproof for advanced protection from the elements. Use the C820 “Shallow Water” for structural monitoring, angle measurement and control, platform leveling, and more.