engine oil level indicator

покажчик рівня оливи в двигуні

engine oil reservoir / engine oil tank

engine capacity / engine power, engine output

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

main gear box oil temperature indicator

fuel level indicator

oil gauge / oil-gauge

engine detonation indicator

engine vibration indicator

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

surveyor's level (surveying level, tbc)

all purpose engine oil

engine lubricating oil

engine oil conditioner

engine oil supply passages

heavy oil engine

viscous engine oil

engine fluid level

reaction engine / motor (jet engine)

rotary engine (Wankel engine)

engine ground run / engine test

airbreathing jet engine / ducted jet engine

air-flow indicator

artificial horizon (gyro horizon/ attitude indicator)

desiccant indicator

gyro course indicator

indicator console

indicator light

indicator system