Page 88
Hong Kong to give a wider range of information than that normally found on the standard topographical series.
Revision 1/600 Scale
7.49 Revision at this scale will decrease in the future as the metric scale of 1/1000 is adopted as the basic mapping scale within the urban areas of Hong Kong and Kowloon. Revision at 1/600 stopped completely at the end of the year in the Kowloon area as the metric series reached almost complete coverage.
Revision 1/1200 Scale
7.50 This year saw an increase in the number of sheets revised at this scale as more staff were able to be transferred to this work from other survey tasks following a lessening of title survey work etc. Improved methods of data compilation including the use of aerial photographs and the use of machine plots of certain areas reduced to 1/1200 scale also helped to speed up this work.
Metrication
7.51 Metrication of the Kowloon Urban area has progressed at a satisfactory pace during the year ending March 31st 1975, with approximately 90% of this area now covered.
7.52 Revision at 1/1000 scale was carried out during this year with a total number of 89 sheets being revised.
Revision Small Scale
7.53 A considerable amount of major revision of 1:10000 (the basic revision scale for all small scale products) sheets was made during the year as much of this information was required by the Cartographic Group for incorporation within this and other map scales.
Site Surveys
7.54 There was a 30% decrease in site surveys carried out for Government projects, enabling some staff to be redeployed on urgent control work.
TITLE SURVEY
7.55 The Survey Branch is responsible for the production of cadastral records and the subsequent documentation prepared from surveys effected to define and delineate land boundaries within Hong Kong, as required by the lot owner, his agent or by the Land Officer.
7.56 This work is carried out solely by this Office, as a system of boundary definition by private practising Registered Surveyors, required by law in many other parts of the world, does not exist in Hong Kong.
This highly responsible work is performed here by departmentally trained Government technicians working under the close supervision of professionally qualified land surveyors. It is endeavoured to keep the ratio of technicians to land surveyor to about 10:1, thereby ensuring an adequately controlled output of
Page 74