An instrument showing the angle that an aircraft makes with the horizon.

Dutch: hellingmeter
Polish: inklinometr

A measuring instrument for measuring the angle of magnetic dip (as from an airplane).

synonym: dip circle.

Dutch: hellingmeter
Polish: busola inklinacyjna

An instrument used by surveyors in order to measure an angle of inclination or elevation.

synonym: clinometer.

Polish: spadkomierz, pochylnik, klinometr, klizymetr, upadomierz, pochyłomierz, eklimetr