noun
inclinometer; tiltmeter; angle meter
Technical instrument for measuring slope, tilt, or inclination, used in surveying, engineering, and geology.
地すべり監視のために傾斜計を設置した。
We installed an inclinometer to monitor landslides.
この傾斜計は0.1度単位で角度を測定できる。
This tiltmeter can measure angles in 0.1-degree increments.
A general angle gauge; 傾斜計 is more specific to slope or tilt measurement.
Compound of 傾斜 (keisha, 'inclination') + 計 (kei, 'meter, gauge').