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.
Ceramic & Porcelain. The ceramic tile industry rates wear using the PEI scale, which classifies tile surfaces from 1 to 5. PEI 1 is least resistant to abrasion and PEI 5 most resistant. Most tile can be used on walls, but floor tile needs to withstand greater wear and tear.For light residential use, Class 2 or greater is a good choice.For high traffic areas such as kitchens and entryways, Class 3 or greater will hold up best.EI 1 is least resistant to abrasion and PEI 5 most resistant. Most tile can be used on walls, but floor tile needs to withstand greater wear and tear. For light residential use, Class 2 or greater is a good choice.