Criminal Code (Cap. 9), article 560

560. For the purpose of any " repertus " relating to any weapon or other thing which appears to have served for the commission of the offence or to have been intended for use in the commission of t he offence or to be the result of the offence, or relating to any paper or other document which may be useful for the discovery of the tru th, there shall be brought or summoned to attend on the spot person s qualified in the particular art or trade, in order to establish the nature, the condition or use of the thing forming the subject-m atter of the " repertus ". Opinion of experts.