zero readerの例文

• The flight instruments in the B . 1 were traditional and included " G4B " compasses; Mk . 4 artificial horizons; and zero reader flight display instruments.
• Esval developed many of the modern aircraft instruments and automatic controls, including the Gyrosyn Compass, the Zero Reader flight director, the A12 automatic pilot, and the Sperry bombsight He was granted over 50 patents during his Sperry career.