A Clinometer is any of various surveying instruments for measuring angles of elevation, slope, or incline with respect to gravity. Also known as an inclinometer, slope indicator, or gradiometer theses precision instruments provide accurate real-time measurements of slope in Degrees. Rieker manufactures these manual type inclinometers using precise glass tube and ball construction. All our tubes are filled with a special damping fluid that controls the movement of the ball, providing a smooth steady roll during static and dynamic applications. The fluid combined with large, clear number and degree markins make it easy to get quick, accurate readings under a wide variety of severe environmental conditions.