Inclinometer
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An inclinometer or clinometer is an instrument used for measuring angles of slope, elevation, or depression of an object with respect to gravity's direction. It is also known as a tilt indicator, tilt
Drawing of an inclinometer, Museo Galileo, Florence
Measuring a building's height
Blériot Monoplane Inclinometer
Nautical wall inclinometer
Tiltmeter
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A tiltmeter is a sensitive inclinometer designed to measure very small changes from the vertical level, either on the ground or in structures. Tiltmeters are used extensively for monitoring volcanoes,
Inclinometer
…measuring angles of slope, elevation, or depression of an object with respect to gravity's direction. It is also known as a tilt indicator, tilt sensor, tilt meter, slope alert, slope gauge, gradient meter, gradiometer, level gauge, level meter, declinometer, and pitch & roll indicator. Clinometers measure both…
A tiltmeter on Mauna Loa, used to predict eruptions by measuring very small changes in the profile of the mountain.
Principle of a modern electronic tiltmeter