hair checking

hairline cracking, hair cracking, plastic shrink-age cracks

Very fine cracks, in a random pattern, which usually do not completely penetrate a paint film, an exposed layer of concrete, etc.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
On the other hand, there was statistical significance differences regarding the relationship between prevalence of head lice and checking frequency of head lice, and methods used for hair checking (p<0.001).
% Natural hair oils 47 7.5 5 8.8 Lice medicines 544 86.8 51 89.5 (like Licid or Haboba) Use of kerosene 36 5.7 1 1.8 Checking frequency of head lice Every day 434 53.6 29 37.7 Every week 244 30.2 30 39.0 Every month 30 3.7 4 5.2 Rarely 37 4.6 7 9.1 Never check 64 7.9 7 9.1 Methods used for hair checking Hand picking 508 62.8 44 57.1 Lice comb 40 4.9 5 6.5 Hand picking & lice comb 197 24.4 21 27.3 Presence of Methods of treatment & control lice or nits P.