| 31. | Many countries also use the millibar or hectopascal to give aviation altimeter settings.
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| 32. | The Retroreflector was used for calibrating the Radar Altimeter to within 10 cm.
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| 33. | As a consequence, three-pointer altimeters were later removed from service.
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| 34. | The resulting altimeter readings are known as flight levels.
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| 35. | The plane's radio altimeter then sounded : " 400 ft ".
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| 36. | FM-CW radars are very widely used as radio altimeters in aircraft.
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| 37. | Approaching, the navigator began calling out the radar altimeter's reading.
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| 38. | Educators need academic skills tests the same way pilots need fuel gauges and altimeters.
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| 39. | A laser altimeter is to measure the heights of mountains and depths of valleys.
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| 40. | It even has a built-in altimeter.
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