1.  The papers of every examination shall be marked under the direction of the Commission, and each competitor shall be graded on a scale of 100, according to the general average determined by the marks made by the examiners on his papers.

2.  The Commission shall appoint in each classified post-office a board of examiners, which shall (a) Conduct all examinations held to test fitness for entrance to or promotion in the classified service of the post-office in which the board is located.

  (d) Mark the papers of such examinations, unless otherwise
  directed, as provided for by General Rule III, clause 12.

  (c) Conduct such examinations for the classified departmental
  service as the Commission may direct.

  3.  The papers of an examination having been marked, the board of
  examiners shall ascertain—­

(a) The name of every competitor who has, under section 1754 of the Revised Statutes, claim of preference in civil appointments, and who has attained a general average of not less than 65 per cent; and all such competitors are hereby declared eligible to the class or place to test fitness for which the examination was held.

(b) The name of every other competitor who has attained a general average of not less than 70 per cent; and all such applicants are hereby declared eligible to the class or place to test fitness for which the examination was held.

4.  The names of all preference-claiming competitors whose general average is not less than 65 per cent, together with the names of all other competitors whose general average is not less than 70 per cent, shall be entered upon the register of persons eligible to the class or place to test fitness for which the examination was held.  The names of male and of female eligibles shall be listed separately.

5.  The grade of each competitor shall be expressed by the whole number nearest the general average attained by him, and the grade of each eligible shall be noted upon the register of eligibles in connection with his name.  When two or more eligibles are of the same grade, preference in certification shall be determined by the order in which their application papers were filed.

  6.  Immediately after the general averages shall have been ascertained
  each competitor shall be notified that he has passed or has failed to
  pass.

7.  If a competitor fail to pass, he may, with the consent of the board, approved by the Commission, be allowed reexamination at any time within six months from the date of failure without filing a new application; but a competitor failing to pass, desiring to take again the same examination, must, if not allowed reexamination within six months from the date of failure, make in due form a new application therefor.