witness-post n.— «It is extremely important that the points S and L of each spiral should be secured by permanent monuments in the centre of the track, and by witness-posts at the side of the road. The posts should be painted and lettered...
witness mark n. generally, an intentional, accidental, or naturally occurring spot, line, groove, or other contrasting area that serves as an indicator of certain facts; in geography and surveying, a blaze, cut, hole, paint splash, or message...
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...
witness post n.— «Sara Yurman, 33, is a geographer with the Gwinnett County planning department who specializes in mapmaking. She found a “witness post” in the Modoc community, a rare thing, so she said, that showed that Modoc...
witness post n.— «In recent years the state of Louisiana has embarked on the grueling process of improving its infrastructure maps. People trudge through marshes looking for so-called witness posts, aboveground markers for pipelines...