§ 6010. Selection of inspectors at stockholders' meetings. Unless otherwise provided in the by-laws, the board, in advance of any stockholders' meeting, may appoint one or more inspectors to act at the meeting or any adjournment thereof. If inspectors are not so appointed, the person presiding at a stockholders' meeting may, and on the request of any stockholder entitled to vote thereat shall, appoint one or more inspectors. In case any person appointed fails to appear or act, the vacancy may be filled by appointment made by the board in advance of the meeting or at the meeting by the person presiding thereat. Each inspector, before entering upon the discharge of his duties, shall take and sign an oath faithfully to execute the duties of inspector at such meeting with strict impartiality and according to the best of his ability. No director or officer of the corporation shall be eligible to act as an inspector of an election of directors of such corporation.