பொருள் : An instrument showing the angle that an aircraft makes with the horizon.
பொருள் : A measuring instrument for measuring the angle of magnetic dip (as from an airplane).
ஒத்த சொற்கள் : dip circle
பொருள் : An instrument used by surveyors in order to measure an angle of inclination or elevation.
ஒத்த சொற்கள் : clinometer