The lines between the towns in this state shall be perambulated, and the marks and bounds renewed, once in every 7 years forever, by the selectmen of the towns, or by such persons as they shall in writing appoint for that purpose.
N.H. Rev. Stat. Ann. § 51:2
Perambulation of Town Lines
Source
Official source: New Hampshire General Court. Reproduced from public-domain New Hampshire statutes; confirm against the official source for the current text. Not legal advice.