attitude indicator

noun 0.637

flight instrument

noun 0.607

horizon

noun 0.595

clinometer

noun 0.589

horizontal plane

noun 0.587

inclinometer

noun 0.570

spirit level

noun 0.562

hypsometer

noun 0.561

altimeter

noun 0.553

astrolabe

noun 0.551

gravimeter

noun 0.536

gyroscope

noun 0.534

tiltmeter

noun 0.534

gyrocompass

noun 0.532

horosphere

noun 0.529

particle horizon

noun 0.527

artificial ice

noun 0.526

theodolite

noun 0.525

azimuth

noun 0.524

horizontality

noun 0.523

armillary sphere

noun 0.520

head-up display

noun 0.520

aneroid barometer

noun 0.520

magnetic compass

noun 0.518

imaginary axis

noun 0.518

variometer

noun 0.517

gravity meter

noun 0.515

celestial sphere

noun 0.511

aircraft attitude

noun 0.510

barometer

noun 0.508

optical flat

noun 0.506

azimuthal

noun 0.506

orbital plane

noun 0.503

planisphere

noun 0.502

glass cockpit

noun 0.502

synthetic air

noun 0.500