N.H. Rev. Stat. § 211:13
No person shall use, have in his possession for use, or furnish for another's use, for taking fish in the fresh waters of this state, except as specifically permitted in this title, a net of any kind or description, set line, fishing otter, trawl, grapple, spear, jack, jack light or electrical or other device for killing or stunning fish. A person found on any such waters of this state, or the shores or islands thereof, having in his possession any of the aforesaid devices, shall be prima facie guilty of a violation of the provisions of this section. Such devices are declared to be public nuisances and may be summarily seized and destroyed by any person. The provisions of this section shall not apply to the executive director or any person acting under his direction.
RSA 211:13
RL 245:37.