The Jewell Instruments C801 Tuff Tilt 420 Tiltmeter combines precision, long-term stability and rugged durability in a compact and reliable instrument. The internal sensing element is a gravity referenced ceramic tilt sensor that delivers high dynamic range and the best resolution of any sensor in its class. Housed in a weatherproof enclosure, this tiltmeter may be used outdoors and in other wet environments.

Applications include monitoring the performance of bridges, dams and other large structures; construction monitoring (standard version); antenna leveling and zenith finding (high-gain version); measuring the angular position of dam gates and other machinery (wide-angle version). Features: 4-20 mA (2-wire current loop, per channel) output; built-in thermistor for temperature measurements; measurements made over long cables using 2-wire pair; long-term stability.