Ảnh chuẩn tiêu chuẩn ASTM D3512
This adjunct consists of 5 photographs on an 11 by 14 in. sheet. The five photographs illustrate varying degrees of pilling and related surface changes which could be encountered on a typical fabric. They vary from No. 1 – Very Severe Pilling to No. 5 – No Pilling. Use this adjunct to compare the tested specimens with the photographs. The photographs, according to personal preference, may be used as supplied or may be cut and used individually.