An instrument that measures angles of slope, inclination, or elevation, used in surveying, geology, and military targeting.
From Greek 'kline' (slope) plus '-meter' (measure). This scientific instrument was developed in the 18th century for precise angle measurement in surveying.
Clinometers became the surveyor's best friend, then the artillery officer's, then the hiker's—one simple tool for measuring slope has quietly been essential to mapping the world, aiming cannons, and calculating mountain climbing danger.
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