Related Clues:

• Aircraft height indicator
• Plane's instrument needs change, covering a period
• One satisfied with change around something in the cockpit
• Aircraft instrument showing change when the enemy comes in
• Pilot's gauge - amid change is it watched?
• Plane's height measurer
• This is in cockpit, for when captain wants his feet up
• Height gauge
• Height sensor
• Instrument is correct, keeping the hour
• Height indicator
• Stretch parts to make different equipment for pilot
• A spell in to modify aircraft instrument
• About time to adjust the height indicator
• Change fourth dimension within height-measuring instrument