The prescribed qualifications for the purpose of subsection (1) of section forty-one of the Criminal Justice Act, 1948 (which relates to the admissibility of certified plans and drawings in criminal proceedings), shall be—
(a) registration as an architect under the Architects (Registration) Acts, 1931 to 1938, or
(b) membership of any of the following bodies, that is to say, the Royal Institution of Chartered Surveyors, the Institution of Civil Engineers, the Institution of Municipal Engineers and the Land Agents Society.