5.10. The section commenced by taking over the management of Government properties which had been let in various ways and now is responsible for the collection of rents amounting to nearly $41M. per annum in respect of about 50 properties. It is gradually putting on to a proper basis the occupation of other buildings where no formal tenancies exist.
5.11. The section works in close co-operation with the Registrar General who advises on the legal aspects and the Maintenance division of the Architectural Office, which carries out any necessary repairs.
General
## SURVEY DIVISION
Assistant Superintendent:
**A. R. GILES, F.R.I.C.S., F.R.G.S., F.V.I.**
5.12. The work of the Survey division can be divided into three main categories:
(a) Control Survey. The provision of horizontal and vertical control, viz. triangulation stations, picket boxes, traverse stations, and level datum bench marks which provide a rigid framework on which all survey work of the Colony is based.
(b) Revision Survey. The provision and revision of large scale detail plans all over the Colony.
(c) Revenue Survey. Surveys for title which involves defining boundaries and setting out new planned areas, surveys for surrenders, grants, sales, exchanges, etc.
Various sections working on the above are stationed and work all over Hong Kong, Kowloon and New Territories including outlying islands.
5.13. During the year work on all three types of survey has been very active; large numbers of control points were required for both air and ground survey. The Revision sections also were engaged on checking the air survey machine plots supplied by the contractor. Owing to the vast amount of construction work and rebuilding in the Colony, more than usually frequent revisions are necessary.
5.14. Revenue survey in spite of the falling-off in land sales has been very heavy, trying to consolidate and overtake the arrears of work
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