| Answer | Crossword Clue |
|---|---|
| BEAM | Guide in instrument landing. |
| scribers | A pointed instrument used for making marks on wood, bricks, etc., to guide a saw or in sign painting |
| bombsight | (in an aircraft) an instrument for aiming bombs at a target, esp. a device that can assume complete control of the aircraft during a bombing run, can automatically compensate for speed, winds, etc., and can guide the release of bombs for maximum accuracy |
| CEILINGZERO | Instrument-landing situation |
