Русско-англо-русский юридический словарь

Normal Wear and Tear. Deterioration to property one would expect from reasonable, light use. For example, small scratches or chips in the paint of a wall that occur over the course of a year or two may be considered normal wear and tear. A large hole in the wall resulting from a wild party generally would not. (Farlex Financial Dictionary)

“Natural wear and tear” means deterioration or depreciation in value by ordinary and reasonable use of the subject-matter. (Black's Law Dictionary)