What are inclinometers?

Some articles on inclinometers, inclinometer:

Clinometer (forestry) - Specific Functions
... Inclinometers are used for Determining latitude using Polaris (in the Northern Hemisphere) or the two stars of the constellation Crux (in the Southern Hemisphere) ... Such inclinometers are, for instance, used for monitoring volcanoes, or for measuring the depth and rate of landslide movement ... Numerous neck and back measurements require the simultaneous use of 2 inclinometers ...
Clinometer (forestry) - Sensor Technology
... Tilt sensors and inclinometers generate an artificial horizon and measure angular tilt with respect to this horizon ... Important specifications to consider when searching for tilt sensors and inclinometers are the tilt angle range and number of axes (which are usually, but not always ... Common implementations of tilt sensors and inclinometers are accelerometer, Liquid Capacitive, electrolytic, gas bubble in liquid, and pendulum ...
Liquid Capacitive Inclinometers
... Liquid capacitive inclinometers are Inclinometers (or Clinometers) whose sensing elements are made with liquid capacitive technology they are considered gravity based ... An inclinometer or clinometer is an instrument for measuring angles of slope (or tilt), elevation or inclination of an object with respect to gravity ... More particularly, an inclinometer can refer to An instrument used to determine the angle of the Earth's magnetic field in respect to the horizontal plane ...