1. Each county clerk is authorized to use a facsimile signature produced through a mechanical device in place of the county clerk’s handwritten signature whenever the necessity may arise and upon approval of the board of county commissioners, subject to the following conditions:
(a) That the mechanical device shall be of such nature that the facsimile signature may be removed from the mechanical device and kept in a separate secure place.
(b) That the use of the facsimile signature shall be made only under the direction and supervision of the county clerk whose signature it represents.
(c) That all of the mechanical device shall at all times be kept in a vault, securely locked, when not in use, to prevent any misuse of the same.
2. No facsimile signature produced through a mechanical device authorized by the provisions of this section shall be combined with the signature of another officer.