AnA '''IFR Viewview limiting device''' simulates [[Instrument meteorological conditions]] (IMC) by restricting a pilots [[field of view]] only to the [[Control panel (engineering)|instrument panel]]. WornThey are worn by pilot'spilots thatwho are working towardstoward theiran [[IFRinstrument rating]], which allows a pilot to fly into conditions that are less than favorable for [[visual flight]]. They are also used by instrument-rated pilots for practicing instrument flight.
Some examples of products that aid in training are Blockalls.