HEIGHT CONTROL IN AIR-PHOTO SURVEY |
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| Abstract: | Abstract1. An air-photo survey of part of Southern Palestine was carried out in 1938, both field-work and plotting being executed by the same surveyor, a comparative newcomer to this type of work, who therefore equipped himself with Lieut Salt's valuable book (Professional Papers of the Air Survey Committee, no. 8, 1933) for guidance. The area covered was very broken barren country and the contours became the principal features of the map, so that a great many spot-heights were necessary and certain deviations in detail from the routine laid down in the Paper suggested themselves. |
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