doll's eye

doll's eye

English

Noun

doll's eye

1. (aviation, often attributive) A magnetic indicator in the cockpit that turns white in the event of a problem.
   • 1996, North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development, AGARDograph (volume 286, page 58)

     A standard NGL flow sensor at the inlet to the pressure demand regulator operated a doll's eye indicator […]

   • 2006, Brian Mercer, Black Arrow Blue Diamond

     Eric Bennett showed me around the cockpit and off I went on a familiarization flight and I was very impressed. […] On the right-hand side of the cockpit were two switches and two 'doll's eye' indicators.

   • 2012, Rowland White, Vulcan 607 (page 419)

     The doors locked into position either side of the rows of bombs like a dog baring its teeth and a magnetic doll's-eye indicator in the cockpit flicked from black to white.