New hampshire constitution
Part I – bill of rights
Article 20

In all controversies concerning property, and in all suits between two or more persons except those in which another practice is and has been customary and except those in which the value in controversy does not exceed $1,500 and no title to real estate is involved, the parties have a right to a trial by jury. This method of procedure shall be held sacred, unless, in cases* arising on the high seas and in cases relating to mariners’ wages, the legislature shall think it necessary hereafter to alter it.