▁to ▁be ▁used ▁as ▁a ▁long - term ▁computer - based ▁anth rop ometric ▁measurement ▁for ▁health ▁care . ▁In ▁ 2 0 0 1 ▁the ▁UK ▁conducted ▁the ▁largest ▁s izing ▁survey ▁to ▁date ▁using ▁sc ann ers . ▁Since ▁then ▁several ▁national ▁surve ys ▁have ▁followed ▁in ▁the ▁UK ' s ▁pione ering ▁steps , ▁not ably ▁Size USA , ▁Size M ex ico , ▁and ▁Size Th ailand , ▁the ▁latter ▁still ▁on going . ▁Size UK ▁showed ▁that ▁the ▁nation ▁had ▁become ▁t aller ▁and ▁heav ier ▁but ▁not ▁as ▁much ▁as ▁expected . ▁Since ▁ 1 9 5 1 , ▁when ▁the ▁last ▁women ' s ▁survey ▁had ▁taken ▁place , ▁the ▁average ▁weight ▁for ▁women ▁had ▁gone ▁up ▁from ▁ 6 2 ▁to ▁ 6 5   kg . ▁However , ▁recent ▁research ▁has ▁shown ▁that ▁post ure ▁of ▁the ▁particip ant ▁significantly ▁influ ences ▁the ▁measurements ▁taken , ▁the ▁precision ▁of ▁ 3 D ▁body ▁sc anner ▁may ▁or ▁may ▁not ▁be ▁high ▁enough ▁for ▁industry ▁toler ances , ▁and ▁measurements ▁taken ▁may ▁or ▁may ▁not ▁be ▁relevant ▁to ▁all ▁applications ▁( e . g . ▁gar ment ▁construction ). ▁Despite ▁these ▁current ▁limitations , ▁ 3 D ▁Body ▁Sc anning ▁has ▁been ▁suggested ▁as ▁a ▁replacement ▁for ▁body ▁measurement ▁prediction ▁techn ologies ▁which ▁( des p ite ▁the ▁great ▁appeal ) ▁have ▁yet ▁to ▁be ▁as ▁reliable ▁as ▁real ▁human ▁data . ▁ ▁Bar op od ographic ▁ ▁Bar op od ographic ▁devices ▁fall ▁into