Subject to any rules that may be made in this behalf, the Authc rity may authorise any person to enter into or with or without assistants or workmen for the purposes of - upon any land or building
(a) making any inquiry, inspection, measurement taking levels of such land or building; or survey or taking levels of such land or Building;
(b) examining works under construction and ascertaining the cours of sewers and drains;
(c) digging or boring into the sub-soil:
(d) setting out boundaries and intended lines of work;
(e) making such levels, boundaries and lines by placing marks and cutting trenches;
(f) ascertaining whether any land is being or has been developed in contravention of the master ferred to in section 14 or in contravention of any condition subject plan or without the permission re- to which permission has been granted or
(g) doing any other thing necessary for the efficient administration of this Act.
Explanation-Every person authorised to enter into or upon any land or building under this section, shall while so acting in pursuance of such autho- rity be deemed to be a public servant for the purposes of section 21 of the Indian Penal Code.