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

instantaneous vertical velocity computer (IVVC)

vertical speed indicator (VSI)

instantaneous burst

instantaneous detonating fuse

instantaneous action fuze

instantaneous percussion fuze

instantaneous radiation

instantaneous radius of the flight path

instantaneous motion of a fluid element

instantaneous rate of flow

instantaneous velocity

instantaneous frequency measurement (IFM)

vertical gyro indicator

vertical scale indicator

hovering and low-speed indicator

rate of climb (ROC) / vertical speed

rate of descent (ROD) / vertical speed

vertical speed (rate of climb, ROC)

vertical speed (rate of descent, ROD)

supersonic speed (exceeds speed of sound / Mach 1)

variable-speed with speed control

cruise speed / cruising speed

Nr gauge (Nr = speed of rotation) / rotor speed sensor

air-flow indicator

artificial horizon (gyro horizon/ attitude indicator)

desiccant indicator

gyro course indicator

indicator console

indicator lamp

indicator light

indicator system

performance indicator