An application for a judgment by default, irrespective of the amount of the proposed judgment, must be made upon affidavit unless the court specifically requests the presentation of oral testimony. Supporting affidavits must be made on personal knowledge, and shall set forth such facts as would be admissible in evidence; show affirmatively that the affiant is competent to testify to the matters stated therein; and avoid mere general conclusions or argument. An affidavit substantially defective in these respects may be stricken, wholly or in part, and the court may decline to consider the application for the default judgment
Nev. R. Prac. Justice. Ct. Reno. Tow. 33