If you're interested in buying or selling dolls, or finding the value of a doll, use the MEMBER DIRECTORY to find a NADDA dealer in your area and to link to member web sites. Your local library or bookstore is also a good place to find a price guide on antique dolls.
The intent of the standard is to define reasonable lippage from one tile to another. When a tile is warped but within standards, all of the corners cannot be set in the plane of the adjoining tiles. Accordingly, the tolerance for variation from tile to tile includes the actual warpage of the tile.
If tiles are quality and you can check using a flat edge corner to corner on back of tile and see if there is space under flat edge in middle of tile then we set them 3/16 or 1/8th for rectified porcelain tiles which can be set closer. I shot for a dime's thickness or 2 credit cards thickness for tile lippage.