witness post n.— «Where it is impossible to put up and keep a post or monument at the proper place, a witness post or monument may be used.» —by George Purcell Costigan Jr. Handbook on American Mining Law (St. Paul...
witness post n.— «As surveys progressed, various improvements were introduced to secure regularity and convenience of description, by the establishment of base-lines, meridians, and standard parallels, through certain permanent natural...