125. Progress Report photographs were taken for the whole department and numbered 1,126 negatives from which 3,637 contact prints and enlargements were made.
126. Drawings were also made for the coloured maps in the Colony Annual Report.
Survey
127. 15 new minor triangulation stations were established and heights above Hong Kong Principal Datum were obtained for 11 major triangulation stations not previously heighted. 3 station pillars were repaired and one station was re-established.
128. 52 miles of control traverse was run to establish over 800 permanent survey marks.
129. A start was made on the replacing of Bench Marks destroyed or removed since the original levelling was done over 20 years ago, and 16 miles of Precise Levelling, providing 27 new Bench Marks, were completed on the Island circuit.
130. The annual computation of mean sea level was recorded as 3.82 feet above Hong Kong Principal Datum.
131. Revenue surveys were made for lease plans for 77 lots and for surrender plans for 23 lots. 173 lots covering an area of 93 acres were set out and boundary stones were placed to demarcate 73 lots.
132. The large scale revision of the urban areas of Hong Kong and Kowloon was continued but at a reduced rate because of the need to meet demands for survey work in other fields. Over 1,100 acres were surveyed during the year and a total of 21 survey sheets at 1/600 were made available.
133. Contour surveys covering a total area of 1,000 acres were made at various scales for planning purposes.
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125. Progress Report photographs were taken for the whole department and numbered 1,126 negatives from which 3,637 contact prints and enlargements were made.
126. Drawings were also made for the coloured maps in the Colony Annual Report.
Survey
127. 15 new minor triangulation stations were established and heights above Hong Kong Principal Datum were obtained for 11 major triangulation stations not previously heighted. 3 station pillars were repaired and one station was re-established.
128. 52 miles of control traverse was run to establish over 800 permanent survey marks.
129. A start was made on the replacing of Bench Marks destroyed or removed since the original levelling was done over 20 years ago, and 16 miles of Precise Levelling, providing 27 new Bench Marks, were completed on the Island circuit.
130. The annual computation of mean sea level was recorded as 3.82 feet above Hong Kong Principal Datum.
131. Revenue surveys were made for lease plans for 77 lots and for surrender plans for 23 lots. 173 lots covering an area of 93 acres were set out and boundary stones were placed to demarcate 73 lots.
132. The large scale revision of the urban areas of Hong Kong and Kowloon was continued but at a reduced rate because of the need to meet demands for survey work in other fields. Over 1,100 acres were surveyed during the year and a total of 21 survey sheets at 1/600 were made available.
133. Contour surveys covering a total area of 1,000 acres were made at various scales for planning purposes.
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